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Female Mary de Lacy Click to view Mary de Lacy in the family tree

Mary's father was Lord Meath Hugh de Lacy and her mother was Rohesia de Clare.  Her paternal grandparents were Gilbert de Lacy and Agnes; her maternal grandparents were 1st Earl of Pembroke, Earl de Clare, Abbot of Ely Gilbert FitzRichard de Clare and Adeliza de Clermont. She had a brother and a sister, named Walter and Emma. She had two half-brothers and three half-sisters, named Geoffrey, William, Aveline, Alice and Maud.

Family Details of Mary's family with Baron Cluny & Oswestry William FitzAlan III

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