Margaret of Mar Peerage person ID=107857 (1272–1326) Parents Helen ferch Daffyd Domhnall I, Earl of Mar Children Nicholas Sutherland Eustachia Sutherland Isabella of Strathbogie William de Moravia, 5th Earl of Sutherland David II Strathbogie, Earl of Atholl Siblings Alexander of Mar Duncan of Mar Isabella of Mar Gartnait, Earl of Mar Partners John of Strathbogie, Earl of Atholl Kenneth de Moravia, 4th Earl of Sutherland