1st Earl of Buchan, Earl of Mar Alexander (The Wolf of Badenoch) Stuart Lord of Badenoch & Margaret Mariot Atheyn 
They had six sons and two daughters, named Earl of Mar Alexander, Duncan, Earl of Sandbauch Sir Andrew, Walter, James, Earl of Atholl Robert, Margaret and Martha.
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Personal Details
1st Earl of Buchan, Earl of Mar Alexander (The Wolf of Badenoch) Stuart Lord of Badenoch
Alexander, known as The Wolf of Badenoch, was born in 1343 in Dundonald, Ayrshire, Scotland.1 He died at the age of 62 in 1405.1
Margaret Mariot Atheyn
Margaret Mariot was born about 1356 in Irvine, Ayshire, Scotland. She died about 1386 in Dundonald Castle, Irvine, Ayshire, Scotland.
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Children
Earl of Mar Alexander Stuart
Earl of Mar Alexander was born about 1375 in Dundonald Castle, Irvine, Ayshire, Scotland.
Earl of Sandbauch Sir Andrew Stuart
Earl of Sandbauch Sir Andrew was born about 1378 in Dundonald Castle, Irvine, Ayshire, Scotland.
Earl of Atholl Robert Stuart
Earl of Atholl Robert was born about 1384 in Dundonald Castle, Irvine, Ayshire, Scotland.