I'm sure someone mentioned a Seymour Challenger, born in Wales about 1841.
Could this be him?
Varteg Hill Wesleyan Methodist Chapel, Monmouthshire
Register of Baptisms, 1838-1857
78 / Jan 11th 1841 / Seymour / John and Susannah Challinger / Garndiffaith /
age 7 months.
The register is held at the Gwent Record Office, document reference
D/942.24.
Lawford