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Male Piers de Grandison (Peter Grandison) Click to view Piers de Grandison in the family tree

Piers was born in 1286 in Ashperton, Herefordshire, England.1   Piers' father was Sir William de Grandison and his mother was Sybil de Tregoze.  His paternal grandparents were Pierre Sire De Grandison I and Agnes De Neuchatel; his maternal grandparents were Lord Tregoze John de Tregoze and Mabel Fitzwarin. He had two brothers and three sisters, named Otho, John, Agnes, Mabel and Catherine.  He was the oldest of the six children. He had a half-sister named Agnes.

1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I25353

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