William FitzGerald, Baron of Windsor and Pembroke
- Born: 1100, Pembroke, Pembrokeshire, , Wales
- Marriage (1): Baroness Maria de Montgomery, of Windsor and Pembroke
- Died: 1173, Carew Castle, Carew, Pembrokeshire, Wales aged 73
- Buried: 1173, Carew, Pembrokeshire, Wales
FamilySearch ID: MSMN-M4Z.
William married Baroness Maria de Montgomery, of Windsor and Pembroke, daughter of Arnoulf de Montgomery and Lafracoth O'Brien. (Baroness Maria de Montgomery, of Windsor and Pembroke was born about 1118 in Carew, Pembrokeshire, Wales, died on 1 Sep 1176 in Reading, Reading, Berkshire, England and was buried after 1 Sep 1176 in Greyfriars Church, Reading, Berkshire, England.)
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