Nielsen Hayden genealogy
Ancestors of Isabel Seymour
1375 - ┌── Roger de St. Maur (of Penhow, Monmouthshire, Wales - Between 30 Oct 1326 and 1337)
┌── John de St. Maur (Between 1295 and 1300 of Penhow, Monmouthshire, Wales - 24 Apr 1358)
┌── Roger Seymour (Between 1340 and 1341 - ??)
│ └── Elizabeth ( - Aft 23 Apr 1358)
│
Isabel Seymour (Between 1370 and 1375 - ??)