Meantime he worked at Calder St. Primary School in Govanhill and at Hillhead High School before becoming principal of Calder Street School and moving to East Kilbride. But, having been throughout a bachelor, before the move he married. It was in 1909 still in Glasgow. His wife was Alice Gray, who lived within a stone's throw of Hampden Park. And interestingly, whilst his age given as fifty-two, although he was actually fifty-five, she was just twenty-two. 

It seems the couple were to have two boys, in 1910 and 1914. But Watson was to die the following year, in 1915, in East Kilbride and aged just sixty. The cause of death is given as pneumonia, but it is said to have been as a result of scratch from a cat. He is buried in Cathcart Cemetery.