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Female Joanna Mac Isaac Click to view Joanna Mac Isaac in the family tree

Joanna Mac was born about 1334 in Dunfermline,Fifeshire,Scotland.  Joanna Mac's father was Thomas Isaac and her mother was Princess Matilda De Brus Of Scotland.  Her maternal grandparents were King Robert I (The Liberator) De Brus Of Scotland and Elizabeth De Burgh.  She was an only child.


Joanna Mac's family with Laird, Chief Eoin (John) MacDougal Of Clan Dougall

‌Joanna Mac and Eoin (John) were married in a religious ceremony in 1361 in Lorn,Argyllshire,Scotland.  They had two daughters named Isabel and Janet.

1 The Magna Charta Sureties 1215, Frederick Lewis Weis, additions by Walter Lee Sheppard Jr, 5th Edition, 1999 @ 42-8
Further source/citation:
The Magna Charta Sureties 1215, Frederick Lewis Weis, additions by Walter Lee Sheppard Jr, 5th Edition, 1999 @ 42-7

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