I William
I was born in 1148 in Scotland.  He died at the age of 66 on December 4th, 1214 in Sterling, Stirlingshire,  Scotland.

 Isabel Avenal
Isabel was born about 1140 in Sandhurst, Gloucestershire, England.  She died about 1185.

 ? of Huntingdon
? of was born about 1162 in Huntingdon,  Northumberland, England.  She died in Lovat, Invernesshire, Scotland.

 Ada of Huntingdon
Ada of was born in 1164 in Huntingdon, Northumberland, England.  She died at the age of 36 in 1200 in Dunbar Castle, East Lothian, Scotland.

 Isobel of Huntingdon
Isobel of was born about 1165 in Huntingdon,  Northumberland, England.