Hi Kris
I eventually obtained a copy of the Entry of Marriage for James Trebilcock St Austell 5c 221 Sept 1859.
It turns out not to be my James. However for your records the marriage represents:
13/8/1859 at the register office St Austell
James Trebilcock, 45 yrs, Widower. Clay Labourer. St Stephens. Roger Trebilcock, Farm Labourer
Mary Ann Kent, 40 years. Spinster, Works at Clay works, St Dennis, Benjamin Kent, Tin Streamer
Both signed by mark. Witnesses Mary Ann Ploming? and Eden Jeffery.
Regards
Greg