Paternal Family Tree: Preston
Maternal Family Tree: Mary Molyneux 1642-1673
Mary Preston Marchioness Powis was born to [her father] Thomas Preston 3rd Baronet and [her mother] Mary Molyneux.
In April 1663 [her uncle] John Preston 2nd Baronet (age 25) died. His brother [her father] Thomas (age 23) succeeded 3rd Baronet Preston of Furness in Lancashire.
In or before 1673 [her father] Thomas Preston 3rd Baronet (age 32) and [her mother] Mary Molyneux (age 30) were married.
In 1673 [her mother] Mary Molyneux (age 31) died.
In or before 1685 [her brother-in-law] Hugh Clifford 2nd Baron Clifford Chudleigh (age 21) and [her sister] Anne Preston Baroness Clifford were married. She by marriage Baroness Clifford of Chudleigh in Devon.
Around 1695. Charles D'Agar (age 26) (attributed). Portrait of Mary Preston Marchioness Powis.
Around 1695 William Herbert 2nd Marquess Powis (age 35) and Mary Preston Marchioness Powis were married. He the son of William Herbert 1st Marquess Powis (age 69) and Elizabeth Somerset Marchioness Powis. They were third cousins.
The History of William Marshal was commissioned by his son shortly after William’s death in 1219 to celebrate the Marshal’s remarkable life; it is an authentic, contemporary voice. The manuscript was discovered in 1861 by French historian Paul Meyer. Meyer published the manuscript in its original Anglo-French in 1891 in two books. This book is a line by line translation of the first of Meyer’s books; lines 1-10152. Book 1 of the History begins in 1139 and ends in 1194. It describes the events of the Anarchy, the role of William’s father John, John’s marriages, William’s childhood, his role as a hostage at the siege of Newbury, his injury and imprisonment in Poitou where he met Eleanor of Aquitaine and his life as a knight errant. It continues with the accusation against him of an improper relationship with Margaret, wife of Henry the Young King, his exile, and return, the death of Henry the Young King, the rebellion of Richard, the future King Richard I, war with France, the death of King Henry II, and the capture of King Richard, and the rebellion of John, the future King John. It ends with the release of King Richard and the death of John Marshal.
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On 2nd June 1696 [her father-in-law] William Herbert 1st Marquess Powis (age 70) died. His son [her husband] William (age 36) succeeded 2nd Marquess Powis, 2nd Earl Powis, 4th Baron Powis of Powis Castle in Powys, 3rd Baronet Powis of Red Castle in Montgomeryshire. Mary Preston Marchioness Powis by marriage Marchioness Powis. Mary Preston Marchioness Powis by marriage Marchioness Powis.
In 1698 [her son] William Herbert 3rd Marquess Powis was born to [her husband] William Herbert 2nd Marquess Powis (age 38) and Mary Preston Marchioness Powis.
After 1698 [her son] Edward Herbert was born to [her husband] William Herbert 2nd Marquess Powis (age 38) and Mary Preston Marchioness Powis. He married 1734 his fourth cousin once removed Henrietta Waldegrave, daughter of James Waldegrave 1st Earl Waldegrave and Mary Webb, and had issue.
On 2nd March 1699 William Maxwell 5th Earl Nithsale and [her sister-in-law] Winifred Herbert Countess Nithsdale (age 19) were married. She by marriage Countess Nithsdale. She the daughter of [her father-in-law] William Herbert 1st Marquess Powis and Elizabeth Somerset Marchioness Powis. He the son of Robert Maxwell 4th Earl Nithsdale and Lucy Douglas Countess Nithsdale (age 55).
Around 1705. Michael Dahl (age 46). Portrait of Mary Preston Marchioness Powis. Walmer Castle [Map].
Around 1705. Michael Dahl (age 46). Portrait of Mary Preston Marchioness Powis. Powis Castle.
In 1706 [her daughter] Theresa Herbert Lady Throckmorton was born to [her husband] William Herbert 2nd Marquess Powis (age 46) and Mary Preston Marchioness Powis. She married 1721 Robert Throckmorton 4th Baronet, son of Robert Throckmorton 3rd Baronet and Mary Yate Lady Throckmorton, and had issue.
On 27th May 1709 [her father] Thomas Preston 3rd Baronet (age 69) died. Baronet Preston of Furness in Lancashire extinct.
Chronicle of a Bourgeois of Valenciennes
Récits d’un bourgeois de Valenciennes aka The Chronicle of a Bourgeois of Valenciennes is a vivid 14th-century vernacular chronicle written by an anonymous urban chronicler from Valenciennes in the County of Hainaut. It survives in a manuscript that describes local and regional history from about 1253 to 1366, blending chronology, narrative episodes, and eyewitness-style accounts of political, military, and social events in medieval France, Flanders, and the Low Countries. The work begins with a chronological framework of events affecting Valenciennes and its region under rulers such as King Philip VI of France and the shifting allegiances of local nobility. It includes accounts of conflicts, sieges, diplomatic manoeuvres, and the impact of broader struggles like the Hundred Years’ War on urban life in Hainaut. Written from the perspective of a burgher (bourgeois) rather than a monastery or royal court, the chronicle offers a rare lay viewpoint on high politics and warfare, reflecting how merchants, townspeople, and civic institutions experienced the turbulence of the 13th and 14th centuries. Its narrative style combines straightforward reporting of events with moral and civic observations, making it a valuable source for readers interested in medieval urban society, regional politics, and the lived experience of war and governance in pre-modern Europe.
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Around 1721 [her son-in-law] Robert Throckmorton 4th Baronet (age 18) and [her daughter] Theresa Herbert Lady Throckmorton (age 15) were married. She the daughter of [her husband] William Herbert 2nd Marquess Powis (age 61) and Mary Preston Marchioness Powis.
On 17th June 1723 [her daughter] Theresa Herbert Lady Throckmorton (age 17) died.
On 8th January 1724 Mary Preston Marchioness Powis died.
On 22nd October 1745 [her former husband] William Herbert 2nd Marquess Powis (age 85) died. His son [her son] William (age 47) succeeded 3rd Marquess Powis, 3rd Earl Powis, 5th Baron Powis of Powis Castle in Powys, 4th Baronet Powis of Red Castle in Montgomeryshire.
[her daughter] Mary Herbert was born to William Herbert 2nd Marquess Powis and Mary Preston Marchioness Powis.
[her daughter] Charlotte Herbert was born to William Herbert 2nd Marquess Powis and Mary Preston Marchioness Powis.
[her daughter] Anne Herbert Baroness Arundel Wardour was born to William Herbert 2nd Marquess Powis and Mary Preston Marchioness Powis. She married in or before 1757 her fourth cousin Henry Arundell 6th Baron Arundel, son of Henry Arundell 5th Baron Arundel and Elizabeth Panton.
Kings Wessex: Great x 21 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 18 Grand Daughter of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 24 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 19 Grand Daughter of Maredudd ap Bleddyn King Powys
Kings England: Great x 13 Grand Daughter of King Edward I of England
Kings Scotland: Great x 20 Grand Daughter of King Duncan I of Scotland
Kings Franks: Great x 27 Grand Daughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Kings France: Great x 22 Grand Daughter of Hugh I King of the Franks
Kings Duke Aquitaine: Great x 25 Grand Daughter of Ranulf I Duke Aquitaine
Great x 4 Grandfather: Thomas Preston 
Great x 3 Grandfather: John Preston
Great x 2 Grandfather: Thomas Preston
Great x 1 Grandfather: John Preston
GrandFather: John Preston 1st Baronet
Father: Thomas Preston 3rd Baronet
Mary Preston Marchioness Powis 13 x Great Grand Daughter of King Edward I of England
Great x 4 Grandfather: Richard Molyneux 
7 x Great Grand Son of King Edward I of England
Great x 3 Grandfather: William Molyneux 8 x Great Grand Son of King Edward I of England
Great x 4 Grandmother: Eleanor Radclyffe 
Great x 2 Grandfather: Richard Molyneux 1st Baronet 9 x Great Grand Son of King Edward I of England
Great x 1 Grandfather: Richard Molyneux 1st Viscount Molyneux 10 x Great Grand Son of King Edward I of England
Great x 4 Grandfather: James Gerard of Astley
Great x 3 Grandfather: Gilbert Gerard
Great x 4 Grandmother: Margaret Holcroft
Great x 2 Grandmother: Frances Gerard Lady Molyneux
Great x 4 Grandfather: Thomas Ratclyffe
Great x 3 Grandmother: Anne Ratclyffe
GrandFather: Caryll Molyneux 3rd Viscount Molyneux 11 x Great Grand Son of King Edward I of England
Mother: Mary Molyneux 12 x Great Grand Daughter of King Edward I of England