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Male Otho De Grandison Click to view Otho De Grandison in the family tree

Otho was born about 1298.  Otho's father was Sir William De Grandison and his mother was Sibyle De Tregoz.  His paternal grandparents were Amadeus De Grandison and Banoile De La Tour De Gerenstein; his maternal grandparents were John De Tregoz and Matilda Fitz-Warren. He had two brothers and three sisters, named Piers, John, Mabilia, Katherine and Agnes.  He was the second youngest of the six children. He had a half-sister named Agnes.

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