John O'Brien Scully in Ontario

Born 1816 at Mt Bruis near Tipperary town, son of Edmund Scully and Marianne O'Brien, emigrated to Ontario with his brother Denis Jeremiah about 1839.Married Maria Ellis in Wellington Ont in Sept 1840, died 1876 in Toronto.Not known if there were any children of the marriage as family in Ireland last touch.Brother Denis was a customs official at Sarnia married twice and left lots of Scullys to populate Canada.Anyone know what happened to John ?He is believed to have been a railway official of some kind.