Sir William Marshall 
Sir William was born in 1146 in Normandie,FRANCE.1 Sir William's father was John FitzGilbert. His paternal grandfather was Gilbert FITZ-ROBERT . He was an only child. He died at the age of 73 on May 14th, 1219 in Caversham,ENGLAND. He was buried in Temple Church,London,ENGLAND.1 General Notes
Name Prefix:<NPFX> III Earl Of Pembroke
Sir William and Isabel were married in a religious ceremony in August 1189.1 They had a son and six daughters, named William , 2nd Earl Of Pembroke, Maud , Countess of Norfolk, Margaret, Eva, Isabell , Countess Of Cornwall, Joan and Sibyl.
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Children
Maud , Countess of Norfolk Marshall
Maud , Countess of Norfolk was born about 1192 in Pembroke,WALES.1 She died on March 27th, 1248.1
Isabell , Countess Of Cornwall Marshall
Isabell , Countess Of Cornwall was born in 1203 in Pembroke,WALES. She died in Berkhampstead,Hereford,ENGLAND; b. Beaulieu,Southampton.
1 Brøderbund WFT Vol. 1, Ed. 1, Tree #1142, Date of Import: Apr 27, 1996
Further sources/citations:
GEDCOM File : 46438.ged, GEDCOM File : rowland2.ged
Further sources/citations:
GEDCOM File : 46438.ged, GEDCOM File : rowland2.ged