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Male John de Morteyn Click to view John de Morteyn in the family tree

John's father was Lord of Cossale & Wellerton Eustace de Morteyn and his mother was Hillary Silvein.  His paternal grandparents were Eistace de Morteyn and Hillaria de Salvain; his maternal grandparents were Lord of Donnesby Richard Silvein and <Unknown>. He had a sister named Constantia.  He died in 1284.1 

Family Details of John's family with Constance de Merston

1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=tjglad&id=I75967&style=TABLE

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