In my research I have uncovered a William Wilcox born 1827 - 1832 at Hayscastle, living
Llanstadwell at the time of the 1881 census, who was a Stoker (Marine)(Seaman). When one
of his sons was born, William is shown as "Sailor (Trinity Service). Is anybody able
to explain Trinity Service?
Dr. Reg Davies, who received my first query, suggested perhaps work associated with being
a pilot, but said this did not seem to fit for a Stoker.