John SEYMOUR & Isabel MacWILLIAM 
They had a son named John II.
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Personal Details
John SEYMOUR
John was born about 1400 in Wolf Hall, Savernake, Wiltshire, England. He died on December 20th, 1464.
Isabel MacWILLIAM
Isabel was born about 1405 in Bristol, Gloucestershire, England. She died on April 14th, 1485.