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Male John III de MORTEYN Click to view John III de MORTEYN in the family tree

John III de was born about 1279 in Tillsworth, Bedforshire, England.  John III de's father was John II de MORTEYN.  His paternal grandparents were John I de MORTEYN and Constance de MERSTON.  He was an only child.  He died in 1346.


John III de's family with Joan de ROTHWELL

They had a daughter named Lucy de.