William Mo'r De Burgh (b. - 1270)

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Death: Died in Ireland
Managed by: Doug Robinson
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About William Mo'r De Burgh


William Og was ancestor to the Earl's of Clanricarde, the Mac William Iochtar, The Bourkes of Mayo, and after the extinction of the de Burgh creation of the Earldom of Ulster, the de Burgh line.

Sir William Og de Burgh

had one son:

Sir William the grey/ Liath de Burgh, d.1324

Sir William the grey, in turn, had three sons:-

--Sir Edmond Albanach de Burgh, 1st Mac William Iochtar/ Lord of the Lower Mac William, d.1375.

--John de Burgh (1350-1398) Theologian, Chancellor of the University of Cambridge

--Sir Ulick de Burgh, Lord of Clanricarde (d.1352) 2nd Mac William Iochtar. Ancestor of the Earls of Clanricarde.