William 5th Earl de Mar , Sir
William 5th Earl de was born in 1222 in Mar, Aberdeenshire, Scotland.  He died before July 25th, 1281 in Kildrummy Castle, Aberdeenshire, Scotland.

 Elizabeth Comyn
Elizabeth was born about 1223 in Buchan, Aberdeenshire, Scotland.  She died in 1267 in Kildrummy Castle, Aberdeenshire, Scotland.

 Donald 6th Earl de Mar , Sir Knight
Donald 6th Earl de was born about 1243 in Kildrummy Castle, Aberdeenshire, Scotland.  He died after July 25th, 1297 in Kildrummy Castle, Aberdeenshire, Scotland.