John is the child of Henry Seymour.
History of Parliament online 
John Seymour Find A Grave Index Name John Seymour Event Type Burial Event Place Winchester, City of Winchester, Hampshire, England Photograph Included N Affiliate Record Identifier 136071441 Cemetery Winchester Cathedral
Citing this Record "Find A Grave Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVPS-ZLZ9 : 13 December 2015), John Seymour, ; Burial, Winchester, City of Winchester, Hampshire, England, Winchester Cathedral; citing record ID 136071441, Find a Grave, http://www.findagrave.com.
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