aka Galrides Vicomes, viscount Parrhoet in Brittany
History of Ashby de la Zouche states "Geoffrey settled in England during the reign of Henry II, and founded another family. He was called Geoffrey de la Zouch."
A Norman. Married the sole heiress to the Belmeis family, whose estates included Tong Castle in Salop, Ashby (became Ashby de la Zouche) in Leicestershire, North Molton in Devon and estates in Cambridgeshire.
The title of Baron Zouche has thrice been created in the Peerage of England. The de la Zouche family descended from Alan de la Zouche (c. 1136–1190), a Breton who settled in England during the reign of Henry II. He obtained Ashby in Leicestershire (called after him Ashby-de-la-Zouch) by his marriage.
http://en.wikipedia.org/wiki/Baron_Zouche
Some records show she is the daughter of Alan La Zouche (1317-1346), the son of William (1269-1336). Some records show her as William's daughter, which would be impossible if Joyce's birth date is near 1342 and William's death date of 1336 is correct. William married Alice De Toeni (1283-1324), making it impossible for Alice to be Joyce's mother as well. Joyce's daughter was born in 1350, making Joyce's birth date earlier and more likely.
Married her sister Elizabeth's husband after Elizabeth's death in 1347
Younger son, heir to brother William 1199. Sheriff of Devonshire 1228-31. A witness to Henry III's confirmation of the Magna Carta.
2nd Baron of Ashby abt 1175 - bef 14 May 1238
Sheriff of Devonshire (1228-1231)
Resided Ashby-de-la-Zouch, Leicestershire, & N Molton, Devonshire, England
In the first year of King Henry II, 1189, Roger received grants of the forfeited estates of the Viscounts of Rohan.
His son, Alan, had a suit against Earl Warrene regarding an estate, was attacked by Warrene on 19 June 1270. He and his son, Roger, were seriously injured. Alan died August 10, leaving Roger his estates. Roger married Elena de Quincy.
m1: Alice de Toenie (1283-1324)
Children:
Elizabeth la Zouche de Mortimer(-1347) m. John de Botetourt Lord Botetourte of Weobley Castle (1318-1385)
Joyce la Zouche de Mortimer m. John de Botetourt, Lord Botetourte of Weobley Castle (1318-1385)
m2: Eleanor de Clare(1292-1337)
Another grandchild of the original Alan de la Zouche, Joyce la Zouche, married Robert Mortimer of Richard's Castle; one of their younger sons, William la Zouche, took the name of la Zouche and bought Ashby-de-la-Zouch from Alan in 1304, the latter to hold it until his death (1314). On December 26, 1323, he was created, by writ, Baron Zouche of Mortimer. This peerage became abeyant in 1406
Another grandchild of the original Alan de la Zouche, Joyce la Zouche, married Robert Mortimer of Richard's Castle; one of their younger sons, William la Zouche, took the name of la Zouche and bought Ashby-de-la-Zouch from Alan in 1304, the latter to hold it until his death (1314). On December 26, 1323, he was created, by writ, Baron Zouche of Mortimer. This peerage became abeyant in 1406.
http://en.wikipedia.org/wiki/Baron_Zouche