Sir William Montacute Lord Montacute( - 18 Oct 1319) William Grandison Lord Grandison( - 27 Jun 1335)
Elizabeth de Montfort( - Aug 1354) Sibella Tregoz( - 21 Oct 1334)
m. ca 1327
William Montacute Earl of Salisbury Catherine Grandison
b. ca 1302, Cassington, Oxon
d. 30 Jan 1344
1st earl: 1337. Earl Marshal. Diplomat. Arrested Mortimer for king.
b.  
d. 23 Apr 1349
Yst dau. Co-heir of nephew Thos, 4th ld Grandison.
Children
William Montacute Earl of Salisbury(20 Jun 1328 - 3 Jun 1397)
Sibyl de Montagu( - 30 Jan 1343)
Phillippa de Montagu( - 5 Jan 1381)
Elizabeth de Montagu( - 31 May 1359)