Family: Donald De Mar, Eighth Earl of Mar / Isabella Stewart (F23412)
m. Abt 1320
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Male
Donald De Mar, Eighth Earl of Mar
Birth 1292 Fifeshire, Scotland 
Death 11 Aug 1332 Perthshire, England Burial Aug 1332 Scotland Marriage Abt 1320 Scotland Father Mother
Female
Isabella Stewart
Birth 1308 Fifeshire, Scotland Death 17 Jan 1347 Aberdeenshire, Scotland Burial Jan 1347 Aberdeenshire, Scotland Father Mother
Female
+ Margaret De Mar, Countess of Mar
Birth 1328 Linlithgowshire, Scotland Death 19 Oct 1393 Scotland Burial 19 Oct 1393 England Spouse William Douglas, 1st Earl of Douglas | F22597 Marriage Abt 1344 Somerset, England