4th Earl of Mar Duncan of Mar
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- 1 4th Earl of Mar Duncan of Mar [1] b. Bef 1183
- 2 William of Mar [1.1]
b. Bef 1236 d. Abt 1281
Muriel
- 3 Domhnall I of Mar [1.1.1]
b. Abt 1243 d. Abt 1302
Helen Ferch Llywelyn b. Abt 1206 d. 1253
- 4 Isabella of Mar [1.1.1.1]
b. 1227 d. Bef 1302
[ =>] - 4 Alexander of Mar [1.1.1.2]
- 4 Duncan of Mar [1.1.1.3]
- 4 Garnait of Mar [1.1.1.4]
d. Bef Sep 1305
[ =>] - 4 Margaret of Mar [1.1.1.5]
- 4 Isabella of Mar [1.1.1.1]
- 3 Domhnall I of Mar [1.1.1]
- 2 William of Mar [1.1]






