*William Earl of Mar
born about 1222 Buchan, Aberdeenshire, Scotland
died before 25 July 1281 Buchan, Aberdeenshire, Scotland

father:
*Duncan MacGylocher 4th Earl of Mar
born about 1180 Aberdeenshire, Scotland
died 7 February 1244

mother:
*Orabella of Latherisk
born about 1207
(end of information).

siblings:
*Margaret of Mar born before 1245

spouse:
*Elizabeth Comyn
born about 1223 Buchan, Aberdeenshire, Scotland
died 1267

children:
*Donald 6th Earl of Mar
born about 1240 Kildrummy, Aberdeenshire, Scotland
died after 25 July 1297

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com