I have nearly traced all the "Trezise" descendents of John Austin Trezise (1805-1890). My wife is Ruth Gibson (nee Trezise)who is also a descendent of JAT. He was born in Falmouth, became a coastguard and moved north to become the coastguard at Aldborough, near Hull in 1835. He had 10 children by his first marriage to Patience Vivyan, one of which was John Austin Trezise (no imagination, so lets call him JAT II).Having worn out Patience, he then married Cecelia Nequest and had a further 3 children all fathered while in his 60's!!. The last, William Henry Trezise is my wifes Great Grandfather and was born when JAT was 68.
JAT II (1848-1913) married Mary Jane Shearsmith on 8/4/1867 at Sculcoates, Hull. Like his father, he also liked breeding and had 9 children, among these were John Austin Trezise (lets call him JAT III) and Mary Ann Shearsmith Trezise (1869-1941). Mary married John Magmes Montell at St Pauls church,Sculcoates in Q3 of 1890 and had 7 children between 1892 and 1901. John was born in Hellinberg, Sweden in about 1856.
I hope this gets you started. I have lots more if you are interested and would be pleased to hear from you as I have no information on the descendents of Mary Ann Shearsmith Trezise.
My email address is email@example.com.
I look forward to hearing from you.