In 1253 [her father] Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 9) and [her mother] Alice or Alix Lusignan Countess Gloucester and Hertford 1236-1290 (age 16) were married. She the daughter of Hugh Lusignan XI Count Lusignan VI Count La Marche II Count Angoulême and Yolande Capet Countess Lusignan, La Marche and Angoulême 1219-1272 (age 34). He the son of Richard de Clare 6th Earl Gloucester 5th Earl Hertford (age 30) and Maud Lacy Countess Gloucester and Hertford 1223-1289 (age 29). He a great x 4 grandson of King Henry I "Beauclerc" England. She a great x 5 granddaughter of King Henry I "Beauclerc" England. 
On 14 Jul 1262 [her grandfather] Richard de Clare 6th Earl Gloucester 5th Earl Hertford (age 39) died. His son [her father] Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 18) succeeded 7th Earl Gloucester, 6th Earl Hertford, 9th Lord Clare, 3rd Lord Glamorgan. [her mother] Alice or Alix Lusignan Countess Gloucester and Hertford 1236-1290 (age 26) by marriage Countess Gloucester, Countess Hertford.
In 1264 Joan Clare Countess Fife was born to Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 20) and Alice or Alix Lusignan Countess Gloucester and Hertford 1236-1290 (age 27).
On 30 Apr 1290 [her father] Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 46) and [her step-mother] Joan of Acre Countess Gloucester and Hertford (age 18) were married at Clerkenwell [Map]. She by marriage Countess Gloucester, Countess Hertford. The difference in their ages was 28 years. She the daughter of King Edward "Longshanks" I of England (age 50) and Eleanor of Castile Queen Consort England (age 49). He the son of Richard de Clare 6th Earl Gloucester 5th Earl Hertford and Maud Lacy Countess Gloucester and Hertford 1223-1289. He a great x 4 grandson of King Henry I "Beauclerc" England. 
In May 1290 [her mother] Alice or Alix Lusignan Countess Gloucester and Hertford 1236-1290 (age 54) died.
On 07 Dec 1295 [her father] Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford (age 52) died at Monmouth Castle [Map]. He buried at Tewkesbury Abbey [Map]. His son [her half-brother] Gilbert de Clare 8th Earl Gloucester 7th Earl Hertford succeeded 8th Earl Gloucester, 7th Earl Hertford, 8th Lord Clare, 4th Lord Glamorgan.
After 1302 Joan Clare Countess Fife (age 38) died.
and Joan Clare Countess Fife were married. She by marriage Countess Fife. She the daughter of Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford and Alice or Alix Lusignan Countess Gloucester and Hertford 1236-1290. She a great x 5 granddaughter of King Henry I "Beauclerc" England.
Paternal Family Tree: Norman
Maternal Family Tree: Adela Valois Countess Blois and Vermandois
Kings Wessex: Great x 8 Grand Daughter of King Edmund "Ironside" I of England
Kings England: Great x 5 Grand Daughter of King Henry I "Beauclerc" England
Kings Scotland: Great x 6 Grand Daughter of Malcolm III King Scotland
Kings Franks: Great x 14 Grand Daughter of Louis "Pious" King Aquitaine I King Franks
Kings France: Great x 4 Grand Daughter of Louis "Fat" VI King France
King James I of England and Ireland and VI of Scotland x 2
Princess Elizabeth Stewart Queen Bohemia x 2
King Charles I of England, Scotland and Ireland x 2
King Charles II of England Scotland and Ireland x 2
King James II of England Scotland and Ireland x 2
King William III of England, Scotland and Ireland x 2
Charles Palatinate Simmern II Elector Palatine Rhine 1651-1685 x 2
King George I of Great Britain and Ireland x 2
Marie Louise Bourbon Queen Consort Spain 1662-1689 x 2
Mary Stewart II Queen England Scotland and Ireland x 2
Queen Anne of England Scotland and Ireland x 2
Sophia Charlotte Hanover Queen Consort Prussia 1668-1705 x 2
Anne Marie Bourbon Queen Consort Sardinia 1669-1728 x 2
King George II of Great Britain and Ireland x 2
Sophia Dorothea Hanover Queen Consort Prussia 1687-1757 x 2
Frederick William "Soldier King" I King Prussia 1688-1740 x 2
Charles Emmanuel III King Sardinia x 2
Louis I King Spain 1707-1724 x 2
Louise Élisabeth Bourbon Queen Consort Spain 1709-1742 x 2
Elisabeth Therese Lorraine Queen Consort Sardinia 1711-1741 x 2
Frederick "The Great" I King Prussia 1712-1786 x 4
Ferdinand VI King Spain 1713-1759 x 2
Louise Hanover Queen Consort Denmark and Norway 1724-1751 x 2
Victor Amadeus III King Sardinia 1726-1796 x 2
King George III of Great Britain and Ireland x 2
Frederick William II King Prussia 1744-1797 x 4
Queen Sophia of Sweden 1746-1813 x 2
Electress Wilhelmina Caroline Oldenburg x 2
Charles XIII King Sweden 1748-1818 x 4
Christian VII King Denmark and Norway 1749-1808 x 2
Caroline Matilda Hanover Queen Consort Denmark and Norway 1751-1775 x 2
Louis XVIII King France 1755-1824 x 4
King Charles X of France 1757-1836 x 4
King George IV of Great Britain and Ireland x 2
King William IV of the United Kingdom x 2
Marie Sophie Hesse-Kassel Queen Consort Denmark and Norway 1767-1852 x 4
Frederick VI King Denmark and Norway 1768-1839 x 4
Caroline of Brunswick Queen Consort England x 2
Frederick William II King Prussia 1770-1840 x 4
Ernest Augustus King Hanover x 2
King Louis Philippe I of France x 2
Louis XVII King France 1785-1795 x 4
Frederick William IV King Prussia 1795-1861 x 4
Caroline Amalie Oldenburg Queen Norway 1796-1881 x 4
William I King Prussia 1797-1888 x 4
Maria Christina of the Two Sicilies Queen Consort Spain 1806-1878 x 4
Queen Louise Hesse-Kassel of Denmark 1817-1898 x 2
King Christian IX of Denmark 1818-1906 x 4
Queen Victoria of the United Kingdom x 2
George V King Hanover 1819-1878 x 2
Frederick III King Prussia x 4
Victoria Empress Germany Queen Consort Prussia x 2
King Edward VII of the United Kingdom x 2
Frederick VIII King Denmark 1843-1912 x 6
Alexandra Glücksburg Queen Consort England x 6
George I King Greece 1845-1913 x 6
Gustav V King Sweden 1858-1950 x 8
Maria de las Mercedes Unknown Queen Consort Spain 1860-1878 x 4
George V King United Kingdom x 8
Victoria Mary Teck Queen Consort England x 6
Frederick Charles I King Finland 1868-1940 x 2
Constantine I King Greece x 14
Maud Windsor Queen Consort Norway x 8
Christian X King Denmark 1870-1947 x 6
Alexandrine Mecklenburg-Schwerin Queen Consort Denmark 1879-1952 x 8
Gustaf Adolph VI King Sweden 1882-1973 x 8
Alfonso XIII King Spain 1886-1941 x 8
Victoria Eugénie Mountbatten Queen Consort Spain 1887-1969 x 2
Louise Mountbatten Queen Consort Sweden x 2
Alexander I King Greece 1893-1920 x 20
King Edward VIII of the United Kingdom x 14
King George VI of the United Kingdom x 14
Paul I King Greece 1901-1964 x 20
Olav Glücksburg V King Norway 1903-1991 x 14
Ingrid Bernadotte Queen Consort Denmark 1910-2000 x 14
Philip Mountbatten Duke Edinburgh x 16
Queen Elizabeth II of the United Kingdom x 21
Sophia Glücksburg Queen Consort Spain 1938- x 38
Juan Carlos I King Spain 1938- x 10
Constantine II King Hellenes 1940- x 38
Carl XVI King Sweden 1946- x 24
King Charles III x 37
Great x 4 Grandfather: Richard de Clare
Great x 3 Grandfather: Roger Clare 2nd Earl Hertford 1116-1173
Great x 4 Grandmother: Alice Gernon
Great x 2 Grandfather: Richard Clare 3rd Earl Hertford 1153-1217
Great x 1 Grandfather: Gilbert Clare 5th Earl Gloucester 4th Earl Hertford 2 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: Robert Normandy 1st Earl Gloucester
Son of King Henry I "Beauclerc" England
Great x 3 Grandfather: William Fitzrobert 2nd Earl Gloucester -1183 Grand Son of King Henry I "Beauclerc" England
Great x 2 Grandmother: Amice Fitzrobert Countess Hertford -1220 Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Robert Beaumont 2nd Earl of Leicester 1104-1168
Great x 3 Grandmother: Hawise Beaumont Countess Gloucester
GrandFather: Richard de Clare 6th Earl Gloucester 5th Earl Hertford 3 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandfather: John Fitzgilbert
Great x 2 Grandfather: William Marshal 1st Earl Pembroke
Great x 4 Grandfather: Walter of Salisbury 2nd Baron Chitterne
Great x 3 Grandmother: Sybil of Salisbury
Great x 4 Grandmother: Sybilla Chaworth Baroness Chitterne
Great x 1 Grandmother: Isabel Marshal Countess Cornwall, Gloucester and Hertford 1200-1240
Great x 4 Grandfather: Gilbert de Clare 1st Earl Pembroke 1100-1148
Great x 3 Grandfather: Richard "Strongbow" Clare 2nd Earl Pembroke 1130-1176
Great x 4 Grandmother: Isabel Beaumont Countess Pembroke
Great x 2 Grandmother: Isabel Clare Countess Pembroke
Father: Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford 4 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: Richard Fitzeustace 5th Baron of Halton
Great x 3 Grandfather: John Fitzrichard 6th Baron Halton
Great x 4 Grandmother: Albreda Lissours
Great x 2 Grandfather: Roger Lacy 6th Baron Pontefract 7th Baron Halton
Great x 4 Grandfather: Ralph Essex
Great x 3 Grandmother: Alice Essex
Great x 4 Grandmother: Alice Vere Baroness Warkworth
Great x 1 Grandfather: John Lacy Earl Lincoln
Great x 2 Grandmother: Maud Clere Baroness Lacy Baroness Warkworth
GrandMother: Maud Lacy Countess Gloucester and Hertford 1223-1289 4 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Robert Quincy
Great x 3 Grandfather: Saer Quincy 1st Earl Winchester 1170-1219
Great x 2 Grandfather: Robert Quincy Earl Lincoln -1217
Great x 4 Grandfather: Robert Beaumont 3rd Earl of Leicester -1190
Great x 3 Grandmother: Margaret Beaumont Countess Winchester
Great x 4 Grandmother: Petronilla Grandesmil Countess Leicester 1135-1212
Great x 1 Grandmother: Margaret Quincy 3rd Countess Lincoln and Pembroke 1206-1266 3 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Ranulf Gernon 4th Earl Chester
Great x 3 Grandfather: Hugh de Kevelioc Gernon 5th Earl Chester 1147-1181 Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandmother: Matilda Fitzrobert Countess Chester -1189 Grand Daughter of King Henry I "Beauclerc" England
Great x 2 Grandmother: Hawise Gernon 2nd Countess Lincoln 2 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Simon "Chauve" Montfort 4th Count Évreux 1128-1181
Great x 3 Grandmother: Bertrade Montfort Countess Chester
Joan Clare Countess Fife 1264-1302 5 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Hugh Lusignan VIII Count Lusignan 1108-1170
Great x 3 Grandfather: Hugh Lusignan
Great x 2 Grandfather: Hugh Lusignan IX Count Lusignan
Great x 1 Grandfather: Hugh Lusignan X Count Lusignan V Count La Marche
GrandFather: Hugh Lusignan XI Count Lusignan VI Count La Marche II Count Angoulême
Great x 4 Grandfather: Wulfgrin Angoulême II Count Angoulême -1140
Great x 3 Grandfather: William "Taillefer" Angoulême VI Count Angoulême -1179
Great x 4 Grandmother: Pontia La Marche Countess Angoulême
Great x 2 Grandfather: Aymer Angoulême I Count Angoulême 1160-1202
Great x 1 Grandmother: Isabella of Angoulême Queen Consort England
Great x 4 Grandfather: Louis "Fat" VI King France
Great x 3 Grandfather: Peter Courtenay
Great x 4 Grandmother: Adelaide Savoy Queen Consort France -1154
Great x 2 Grandmother: Alice Courtenay Countess Angoulême -1218
Great x 4 Grandfather: Renaud Courtenay
Great x 3 Grandmother: Elizabeth Courtenay
Great x 4 Grandmother: Helene du Donjon
Mother: Alice or Alix Lusignan Countess Gloucester and Hertford 1236-1290 5 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Louis "Fat" VI King France
Great x 3 Grandfather: Robert "Great" Capet I Count Dreux
Great x 4 Grandmother: Adelaide Savoy Queen Consort France -1154
Great x 2 Grandfather: Robert Capet II Count Dreux
Great x 1 Grandfather: Peter of Dreux aka Mauclerc Duke Brittany
Great x 4 Grandfather: Enguerrand Coucy
Great x 3 Grandfather: Raoul Coucy
Great x 4 Grandmother: Agnes Beaugency
Great x 4 Grandfather: Baldwin Flanders IV Count Hainault 1108-1171
Great x 3 Grandmother: Agnes Flanders
GrandMother: Yolande Capet Countess Lusignan, La Marche and Angoulême 1219-1272 4 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Aimery Thouars V Viscount Thouars
Great x 3 Grandfather: Geoffrey Thouars IV Viscount Thouars
Great x 4 Grandmother: Agnes Poitiers Queen Consort Aragon 1105-1159
Great x 2 Grandfather: Guy Thouars
Great x 4 Grandfather: Hugh "Brown" Lusignan VII Count Lusignan II Count La Marche 1065-1151
Great x 3 Grandmother: Aenor Lusignan Viscountess Thouars
Great x 1 Grandmother: Alix Thouars Duchess of Brittany 1201-1221 3 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Alan "Black" Penthièvre 1st Earl Richmond 1099-1146
Great x 3 Grandfather: Conan "The Young" Penthièvre IV Duke Brittany 1138-1171 Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandmother: Bertha Canhiart I Duchess Brittany Grand Daughter of King Henry I "Beauclerc" England
Great x 2 Grandmother: Constance Penthièvre Duchess Brittany 2 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Henry Dunkeld 3rd Earl Huntingdon 1st Earl of Northumbria
Great x 3 Grandmother: Margaret Dunkeld Duchess Brittany 1145-1201
Great x 4 Grandmother: Ada Warenne Countess Huntingdon and Northumbria 1120-1178