Clement-Jones family - Person Sheet
Clement-Jones family - Person Sheet
NameLady Katherine MORTIMER, 12240
MotherJoan DE GENEVILLE , 11077 (1286-1356)
FatherGuy de BEAUCHAMP 10th Earl of Warwick , 12241 (1272-1315)
ChildrenPhilippa , 12238 (1344-1386)
 William , 12699
 Thomas , 12709 (1338-1401)
Notes for Lady Katherine MORTIMER
Katherine Mortimer, Countess of Warwick (1314 – 4 August 1369) was the wife of Thomas de Beauchamp, 11th Earl of Warwick KG, an English peer, and military commander during the Hundred Years War. She was a daughter and co-heiress of Roger Mortimer, 1st Earl of March and Joan de Geneville, Baroness Geneville.

Sometime before 1355, she became an important figure at the royal court of King Edward III.

Family and lineage

Katherine Mortimer was born at Ludlow Castle, Shropshire, England, in 1314, one of the twelve children and a co-heiress of Roger Mortimer, 1st Earl of March and Joan de Geneville, Baroness Geneville. Her paternal grandparents were Edmund Mortimer, 2nd Baron Mortimer and Margaret de Fiennes, and her maternal grandparents were Sir Piers de Geneville, of Trim Castle and Ludlow, and Jeanne of Lusignan.

Her father was de facto ruler of England together with his mistress Isabella of France, Queen consort of King Edward II, until his eventual capture and execution by the orders of King Edward III, eldest son of Isabella and King Edward II. The latter had been deposed in November 1326, and afterwards cruelly murdered by assassins acting under the orders of Mortimer and Queen Isabella. Katherine was sixteen years old when her father was hanged, drawn and quartered at Tyburn, London on 29 November 1330.


On 19 April 1319, when she was about five years old, Katherine married Thomas de Beauchamp, 11th Earl of Warwick, eldest son of Guy de Beauchamp, 10th Earl of Warwick and Alice de Toeni.[1] Their marriage required a Papal dispensation as they were related within the prohibited third and fourth degrees. Beauchamp had succeeded to the earldom at the age of two, therefore Katherine was styled Countess of Warwick from the time of her marriage until her death. The marriage had been arranged in July 1318 in order to settle a quarrel between the two families over the lordship of Elfael, which was thus given to Katherine as her marriage portion.[2] For the term of his minority, Beauchamp's custody had been granted to Katherine's father, Roger Mortimer.[3]

Katherine later became an important personage at the court of King Edward III. As a sign of royal favour she was chosen to stand as one of the godmothers, along with Queen Philippa of Hainault, to the latter's granddaughter, Philippa, Countess of Ulster in 1355. This honour bestowed on Katherine is described by 19th century author Agnes Strickland according to the Friar's Genealogy: "Her [Philippa, Countess of Ulster] godmother also was of Warwick Countess, a lady likewise of great worthiness".[4]


Katherine and Beauchamp together had fifteen children
Last Modified 27 Aug 2020Created 2 Apr 2024 using Reunion for Macintosh