Duncan 4th Earl de Mar
Duncan 4th Earl de was born about 1160 in Mar, Aberdeenshire, Scotland.  He died in Mar, Aberdeenshire, Scotland.

 Margaret of Mar
Margaret of was born in 1220 in Mar, Aberdeenshire, Scotland.  Margaret of is no longer alive.

 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.