Reed, Paul C, Seymour Family of Hatch, Somerset, and de la Mare Family of Little Hereford, in Foundations for Medieval Genealogy, vol 3 no 3 (2010), pp217-266. Available at https://fmg.ac/publications/journal/volume-3/file/277-seymour-2. Information from this source tagged as [Ref: Reed SEYMOUR p[0-9]*].
Sources for birth and parent Information
date:
abt 1350 [Ref: Reed SEYMOUR p251],
father:
[Ref: Reed SEYMOUR p251],
niece:
Joan de la MARE [Ref: Reed SEYMOUR p220(21)]
Research Notes:
Knt, of Herefordshire [Ref: Reed SEYMOUR p220(21)]
heir was his sister Joan [Ref: Reed SEYMOUR p220(21)]