William De Mar
William was born in 1222 in Aberdeenshire, England.  He died before July 25th, 1281.

 Elizabeth De Comyn
Elizabeth was born about 1223 in Altrye, Morayshire, Scotland.  She died in 1267.

 Donald De Mar
Donald was born about 1243 in Kildrummy, Scotland.  He died after July 25th, 1297 in Kildrummy, Scotland.