I have in my family tree two Seymor familes that may have had
Devon conections though the census records say they were born in
Beaufort,
Essex. England.
William Henry
Seymour born abt 1821 died abt 1855
he married Elzabeth
Harris b 1821, Devonport, d. abt 1855
He was a tailor and lived in St Pancras,
LondonJohn Wiloughby
Seymour was his brother, born abt 1821
he married Elizabeth
Alden Hewins and they lived in
Boston, Massachsetts. I think he was an artist as was Elizabeth's father Amasa
Hewins.
Their children were born in the 1846 to 1853 range.
The family legend says they were related to the line that became the
Dukes of
Somerset in the 1920's but I haven't traced it back before those brothers.