I'm no getting very far, but in my newspaper researches I have found out that Thomas was a keen poultryman and regulalry won prizes in the Porthmadoc, Cricieth and Lleyn and Eifionydd shows!
There's a brief report of his death in 1918, but none of the helpful family background or a funeral report
One small clue - he is at least once referred to as Thomas Pierce jnr in show reports - possibly has a father of the same name?