Biography of Henry Percy 10th and 2nd Baron Percy 1301-1352
Paternal Family Tree: Reginar aka Percy
In 1293 [his father] Henry Percy 9th and 1st Baron Percy (age 19) and [his mother] Eleanor Fitzalan Baroness Percy (age 9) were married. She the daughter of Richard Fitzalan 8th Earl Arundel (age 25) and Alice Saluzzo Countess Arundel. They were third cousin once removed. She a great x 4 granddaughter of King John "Lackland" of England. 
In 1293 [his uncle] John Percy 8th Baron Percy (age 19) died. His brother [his father] Henry Percy 9th and 1st Baron Percy (age 19) succeeded 9th Baron Percy of Topcliffe.
On 06 Feb 1299 King Edward "Longshanks" I of England (age 59) created a number of new Barons by writ of summons to Edward's 44th Parliament ...
John Ferrers 1st Baron Ferrers of Chartley (age 27) was created 1st Baron Ferrers of Chartley.
John Lovell 1st Baron Lovel (age 45) was created 1st Baron Lovel of Titchmarsh. Joan Ros Baroness Lovel (age 39) by marriage Baroness Lovel of Titchmarsh.
William Ros 1st Baron Ros Helmsley (age 44) was created 1st Baron Ros Helmsley. Maud Vaux Baroness Ros (age 42) by marriage Baroness Ros Helmsley.
William Devereux 1st Baron Devereux Lyonshall (age 55) was created 1st Baron Devereux Lyonshall. Lucy Burnell Baroness Devereux Lyonshall by marriage Baroness Devereux Lyonshall.
Adam Welles 1st Baron Welles (age 50) was created 1st Baron Welles. Joan D'Engayne Baroness Welles and Ughtred by marriage Baroness Welles.
Robert Clinton 1st Baron Clinton (age 41) was created 1st Baron Clinton. Ida Odingsells Baroness Clinton (age 34) by marriage Baroness Clinton.
John Moels 1st Baron Moels (age 30) was created 1st Baron Moels.
The next baronies may not have been created on 06 Feb 1299 but were created in 1299 possibly for Edward's 45th and 46th Parliaments on 10 Apr 1299 and 21 Sep 1299 respectively.
Edmund Deincourt 1st Baron Deincourt (age 49) was created 1st Baron Deincourt.
John Strange 1st Baron Strange Knockin (age 46) was created 1st Baron Strange Knockin. Maud Eiville Baroness Strange Knockin by marriage Baroness Strange Knockin.
John St John Lagenham 1st Baron St John Lagenham (age 49) was created 1st Baron St John Lagenham.
Robert Clifford 1st Baron Clifford (age 24) was created 1st Baron de Clifford. [his future mother-in-law] Maud Clare Baroness Clifford Baroness Welles (age 23) by marriage Baroness de Clifford.
Henry Grey 1st Baron Grey of Codnor (age 44) was created 1st Baron Grey of Codnor. Eleanor Courtenay Baroness Grey Codnor by marriage Baroness Grey of Codnor.
John Mohun 1st Baron Dunster (age 30) was created 1st Baron Mohun of Dunster. Ada Tiptoft Baroness Dunster (age 24) by marriage Baroness Mohun of Dunster.
Roger Scales 1st Baron Scales was created 1st Baron Scales.
John St John 1st Baron St John Basing (age 25) was created 1st Baron St John Basing.
John Beauchamp 1st Baron Beauchamp Somerset (age 24) was created 1st Baron Beauchamp Somerset.
Alan Zouche 1st Baron Zouche Ashby (age 31) was created 1st Baron Zouche Ashby.
[his father] Henry Percy 9th and 1st Baron Percy (age 25) was created 1st Baron Percy of Alnwick. [his mother] Eleanor Fitzalan Baroness Percy (age 15) by marriage Baroness Percy of Alnwick.
William Grandison 1st Baron Grandison (age 37) was created 1st Baron Grandison. Sibylla Tregoz Baroness Grandison by marriage Baroness Grandison. His brother was also created Baron Grandison on the same day.
Otto Grandison 1st Baron Grandison (age 61) was created 1st Baron Grandison. His brother was also created Baron Grandison on the same day.
Thomas de Multon 1st Baron Multon (age 22) was created 1st Baron Multon Egremont. Eleanor Burgh Baroness Multon Egremont (age 17) by marriage Baroness Multon Egremont.
On 06 Feb 1301 Henry Percy 10th and 2nd Baron Percy was born to Henry Percy 9th and 1st Baron Percy (age 27) and Eleanor Fitzalan Baroness Percy (age 17).
In 1314 [his father] Henry Percy 9th and 1st Baron Percy (age 40) died. He was buried at Fountains Abbey [Map]. His son Henry Percy 10th and 2nd Baron Percy (age 12) succeeded 2nd Baron Percy of Alnwick, 10th Baron Percy of Topcliffe.
On 24 Jun 1314 the Scottish army of Robert "The Bruce" I King Scotland (age 39) including, James "Black" Douglas (age 28), heavily defeated the English army led by King Edward II of England (age 30) at the Battle of Bannockburn.
Gilbert de Clare 8th Earl Gloucester 7th Earl Hertford was killed. Earl Gloucester, Earl Hertford extinct.
John Comyn 4th Lord Baddenoch (age 20), Robert Felton 1st Baron Felton (age 44) and William Vesci were killed.
William Marshal 1st Baron Marshal (age 36) was killed. His son John Marshal 2nd Baron Marshal (age 22) succeeded 2nd Baron Marshal.
Robert Clifford 1st Baron Clifford (age 40) was killed. His son [his future brother-in-law] Roger Clifford 2nd Baron Clifford (age 14) succeeded 2nd Baron de Clifford.
John Lovell 2nd Baron Lovel (age 25) was killed. His son John Lovell 3rd Baron Lovel succeeded 3rd Baron Lovel of Titchmarsh.
Henry Bohun was killed by Robert "The Bruce" I King Scotland (age 39). He was buried in Llanthony Secunda Priory, Gloucestershire [Map].
Walter Fauconberg 2nd Baron Fauconberg (age 50) possilby died although his death is also reported as being on 31 Dec 1318.
Bartholomew Badlesmere 1st Baron Badlesmere (age 38), Humphrey Bohun 4th Earl Hereford 3rd Earl Essex (age 38), Goronwy ap Tudur Hen Tudor, Henry Beaumont Earl Buchan (age 35), Aymer de Valence 2nd Earl Pembroke (age 39) and Robert Umfraville 8th Earl Angus (age 37) fought.
Pain Tiptoft 1st Baron Tibetot (age 34) was killed. His son John Tiptoft 2nd Baron Tibetot succeeded 2nd Baron Tibetot.
John Montfort 2nd Baron Montfort (age 23) was killed. Peter Montfort 3rd Baron Montfort (age 23) succeeded 3rd Baron Montfort.
Thomas Grey (age 34) undertook a suicidal charge that contributed to the English defeat and subsequently blemished his career.
William Latimer 2nd Baron Latimer of Corby (age 38) was captured.
Michael Poynings (age 44) was killed.
In or before 1321 Henry Percy 10th and 2nd Baron Percy (age 19) and Idonia Clifford Baroness Percy (age 17) were married. She by marriage Baroness Percy of Alnwick, Baroness Percy of Topcliffe. They were half third cousin once removed. He a great x 5 grandson of King John "Lackland" of England. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.
In 1321 [his son] Henry Percy 11th and 3rd Baron Percy was born to Henry Percy 10th and 2nd Baron Percy (age 19) and [his wife] Idonia Clifford Baroness Percy (age 18).
On 23 Mar 1322 at York [Map] ...
[his brother-in-law] Roger Clifford 2nd Baron Clifford (age 22) was hanged. His brother [his brother-in-law] Robert Clifford 3rd Baron Clifford (age 16) succeeded 3rd Baron de Clifford.
John Mowbray 2nd Baron Mowbray (age 35) was hanged. He was buried at Fountains Abbey [Map]. His son John Mowbray 3rd Baron Mowbray (age 11) succeeded 3rd Baron Mowbray.
Around Aug 1328 [his mother] Eleanor Fitzalan Baroness Percy (age 44) died. Monument in Beverley Minster [Map].
Eleanor Fitzalan Baroness Percy:
Around 1284 she was born to Richard Fitzalan 8th Earl Arundel and Alice Saluzzo Countess Arundel.
In 1293 Henry Percy 9th and 1st Baron Percy and she were married. She the daughter of Richard Fitzalan 8th Earl Arundel and Alice Saluzzo Countess Arundel. They were third cousin once removed. She a great x 4 granddaughter of King John "Lackland" of England.
Before 1329 [his brother-in-law] Robert Clifford 3rd Baron Clifford (age 23) and Isabel Berkeley Baroness Clifford Baroness Musgrave (age 21) were married. She by marriage Baroness de Clifford. They were third cousin once removed. He a great x 4 grandson of King Henry "Curtmantle" II of England. She a great x 3 granddaughter of King John "Lackland" of England. 
In 1330 [his daughter] Margaret Percy Baroness Ferrers Groby was born to Henry Percy 10th and 2nd Baron Percy (age 28) and [his wife] Idonia Clifford Baroness Percy (age 27).
In 1332 after the death of John Clavering, the last of the male line of Roger Fitzrichard 1st Baron Warkworth, and the death of his wife Hawise Tiptoft (age 75) in 1345, Warkworth Castle [Map] passed to Henry Percy 10th and 2nd Baron Percy (age 30).
In 1336 [his daughter] Eleanor Percy Baroness Fitzwalter was born to Henry Percy 10th and 2nd Baron Percy (age 34) and [his wife] Idonia Clifford Baroness Percy (age 33).
In or before 1337 Thomas Strickland (age 37) and [his sister-in-law] Cecilia Welles (age 26) were married. She a great x 4 granddaughter of King Henry "Curtmantle" II of England. 
After 20 Jan 1340 [his son-in-law] Robert Umfraville and [his daughter] Margaret Percy Baroness Ferrers Groby (age 10) were married. He the son of Gilbert Umfraville 9th Earl Angus (age 30) and Joan Willoughby Countess Angus. They were half fourth cousins. She a great x 5 granddaughter of King Henry "Curtmantle" II of England. 
Before 10 Nov 1341 [his son] Henry Percy 11th and 3rd Baron Percy (age 20) and [his daughter-in-law] Mary Plantagenet Baroness Percy (age 21) were married. She by marriage Baroness Percy of Alnwick. She the daughter of Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster (age 60) and Maud Chaworth. They were half third cousin once removed. He a great x 5 grandson of King Henry "Curtmantle" II of England. She a great granddaughter of King Henry III of England. 
On 20 May 1344 [his brother-in-law] Robert Clifford 3rd Baron Clifford (age 38) died. His son Robert Clifford 4th Baron Clifford (age 15) succeeded 4th Baron de Clifford.
In or before 1345 [his son-in-law] John Fitzwalter 3rd Baron Fitzwalter (age 30) and [his daughter] Eleanor Percy Baroness Fitzwalter (age 8) were married. She by marriage Baroness Fitzwalter. The difference in their ages was 21 years. He a great x 3 grandson of King Henry "Curtmantle" II of England. She a great x 5 granddaughter of King Henry "Curtmantle" II of England. 
On 17 Oct 1346 at the Battle of Neville's Cross near Durham, County Durham [Map] the English inflicted a heavy defeat on the Scottish army that had invaded England in compliance with their treaty with the French for mutual support against England.
The English army included: William Deincourt 1st Baron Deincourt (age 45), Henry Scrope 1st Baron Scrope Masham (age 34), Ralph Hastings (age 55), Ralph Neville 2nd Baron Neville of Raby (age 55), Archbishop William Zouche, Henry Percy 10th and 2nd Baron Percy (age 45) and John Mowbray 3rd Baron Mowbray (age 35).
Of the Scottish army King David II of Scotland (age 22), John Graham Earl Menteith and William "Flower of Chivalry and Knight Liddesdale" Douglas 1st Earl Atholl (age 46) were captured and imprisoned in the Tower of London [Map].
Neil Bruce, John Randolph 3rd Earl Moray (age 40), David Hay 6th Baron Erroll (age 28) and Edward Keith of Sinton (age 66) were killed.
John Graham Earl Menteith was present.
On 26 Feb 1352 Henry Percy 10th and 2nd Baron Percy (age 51) died. His son [his son] Henry Percy 11th and 3rd Baron Percy (age 31) succeeded 3rd Baron Percy of Alnwick, 11th Baron Percy of Topcliffe.
On 24 Aug 1365 [his former wife] Idonia Clifford Baroness Percy (age 62) died at Alnwick, Northumberland [Map].
[his daughter] Maud Percy Baroness Neville Raby was born to Henry Percy 10th and 2nd Baron Percy and Idonia Clifford Baroness Percy.
[his son] Bishop Thomas Percy was born to Henry Percy 10th and 2nd Baron Percy and Idonia Clifford Baroness Percy.
[his daughter] Isabel Percy Baroness Aton was born to Henry Percy 10th and 2nd Baron Percy and Idonia Clifford Baroness Percy.
[his son] Roger Percy was born to Henry Percy 10th and 2nd Baron Percy and Idonia Clifford Baroness Percy.
Kings Wessex: Great x 11 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 6 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 12 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 7 Grand Son of Maredudd ap Bleddyn King Powys
Kings England: Great x 5 Grand Son of King John "Lackland" of England
Kings Scotland: Great x 9 Grand Son of Malcolm III King Scotland
Kings Franks: Great x 13 Grand Son of Louis "Pious" King Aquitaine I King Franks
Kings France: Great x 5 Grand Son of Louis "Fat" VI King France
King Richard III of England x 1
Anne Neville Queen Consort England x 2
Catherine Parr Queen Consort England x 1
Jane "Nine Days Queen" Grey I Queen England and Ireland x 1
Queen Elizabeth II of the United Kingdom x 176
Queen Consort Camilla Shand x 65
Great x 4 Grandfather: Godfrey Reginar I Count Louvain
Great x 3 Grandfather: Jocelin Percy
Great x 4 Grandmother: Ida Chiny Countess Louvain
Great x 2 Grandfather: Henry Percy
Great x 4 Grandfather: William Percy 3rd Baron Percy Topcliffe
Great x 3 Grandmother: Agnes Percy 4th Baroness Percy Topcliffe
Great x 1 Grandfather: William Percy 6th Baron Percy Topcliffe
GrandFather: Henry Percy 7th Baron Percy Topcliffe
Father: Henry Percy 9th and 1st Baron Percy
Great x 4 Grandfather: Geoffrey Plantagenet Duke Normandy
Great x 3 Grandfather: Hamelin Warenne 4th Earl Surrey
Great x 4 Grandmother: Mistress Unknown
Great x 2 Grandfather: William Warenne 5th Earl Surrey
Great x 4 Grandfather: William Warenne 3rd Earl Surrey
Great x 3 Grandmother: Isabella Warenne Countess Boulogne 4th Countess of Surrey
Great x 4 Grandmother: Adela Montgomery Countess of Salisbury and Surrey
Great x 1 Grandfather: John Warenne 6th Earl Surrey
Great x 4 Grandfather: John Fitzgilbert
Great x 3 Grandfather: William Marshal 1st Earl Pembroke
Great x 4 Grandmother: Sybil of Salisbury
Great x 2 Grandmother: Maud Marshal Countess Norfolk and Surrey
Great x 4 Grandfather: Richard "Strongbow" Clare 2nd Earl Pembroke
Great x 3 Grandmother: Isabel Clare Countess Pembroke
Great x 4 Grandmother: Aoife NI Diarmait Macmurrough Countess Pembroke and Buckingham
GrandMother: Eleanor Warenne Baroness Percy Topcliffe
Great x 4 Grandfather: Hugh Lusignan
Great x 3 Grandfather: Hugh Lusignan IX Count Lusignan
Great x 2 Grandfather: Hugh Lusignan X Count Lusignan V Count La Marche
Great x 1 Grandmother: Alice Lusignan Countess of Surrey
Great x 4 Grandfather: William "Taillefer" Angoulême VI Count Angoulême
Great x 3 Grandfather: Aymer Angoulême I Count Angoulême
Great x 2 Grandmother: Isabella of Angoulême Queen Consort England
Great x 4 Grandfather: Peter Courtenay
Great x 3 Grandmother: Alice Courtenay Countess Angoulême
Great x 4 Grandmother: Elizabeth Courtenay
Henry Percy 10th and 2nd Baron Percy 5 x Great Grand Son of King John "Lackland" of England
Great x 4 Grandfather: William Fitzalan
Great x 3 Grandfather: John Fitzalan
Great x 2 Grandfather: John Fitzalan 6th Earl Arundel 4 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: William D'Aubigny 3rd Earl Lincoln 3rd Earl Arundel
Great x 3 Grandmother: Isabel D'Aubigny 3 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Mabel Gernon Countess Lincoln and Arundel 2 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 1 Grandfather: John Fitzalan 7th Earl Arundel 5 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: Theobald Walter
Great x 3 Grandfather: Theobald Butler
Great x 4 Grandmother: Maud Vavasour
Great x 2 Grandmother: Maud Verdun Countess Arundel
Great x 4 Grandfather: Nicholas Verdun
Great x 3 Grandmother: Rohesia Verdun
GrandFather: Richard Fitzalan 8th Earl Arundel 3 x Great Grand Son of King John "Lackland" of England
Great x 4 Grandfather: Roger Mortimer
Great x 3 Grandfather: Ralph Mortimer
Great x 4 Grandmother: Isabel Ferrers
Great x 2 Grandfather: Roger Mortimer 1st Baron Mortimer of Wigmore Great Grand Son of King John "Lackland" of England
Great x 4 Grandfather: Llewellyn "The Great" Aberffraw
Great x 3 Grandmother: Gwladus verch Llewelyn "Dark Eyed" Aberffraw Grand Daughter of King John "Lackland" of England
Great x 4 Grandmother: Joan Plantagenet Daughter of King John "Lackland" of England
Great x 1 Grandmother: Isabella Mortimer Countess Arundel 2 x Great Grand Daughter of King John "Lackland" of England
Great x 4 Grandfather: Reginald de Braose 9th Baron Abergavenny
Great x 3 Grandfather: William de Braose
Great x 4 Grandmother: Graecia Briwere
Great x 2 Grandmother: Maud de Braose
Great x 4 Grandfather: William Marshal 1st Earl Pembroke
Great x 3 Grandmother: Eva Marshal
Great x 4 Grandmother: Isabel Clare Countess Pembroke
Mother: Eleanor Fitzalan Baroness Percy 4 x Great Grand Daughter of King John "Lackland" of England
Great x 2 Grandfather: Manfred III Marquess Saluzzo
Great x 1 Grandfather: Thomas I Marquess Saluzzo 5 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandfather: Thomas Savoy I Count Savoy
Great x 3 Grandfather: Amedeo Savoy IV Count Savoy
Great x 4 Grandmother: Margaret Geneva Countess Savoy
Great x 2 Grandmother: Beatrice Savoy Marchioness of Saluzzo 4 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandfather: Hugh III Duke Burgundy 2 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandmother: Margaret Burgundy Countess Savoy 3 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandmother: Beatrice of Albon Duchess Burgundy
GrandMother: Alice Saluzzo Countess Arundel 6 x Great Grand Daughter of King William "Conqueror" I of England