I too am researching the Calladines, although I don't know if any of mine ended up in Sarnia. I know there are some in Peterborough though and I don't even know if they are mine.
Here are my Calladines: (I don't have a Thomas that I know of)
John Calladine born in ? perhaps England about 1850. He married Annie Wilson late Williams. They had William born in 1878, Charles H. (my line) born in 1882 in Kent and Charlotte born 1883 in Dover, Kent. (she died as an infant) John came to Canada in 1883 and Annie and the 2 boys followed in 1885. Does any of this connect to you at all please? I'm stuck at a major brickwall.