He married (first) in December 1879 Margaret Jane Breadon, who died in March 1883; she was the daughter of Christopher Breadon of Montreal. His second marriage in October 1888 was to Lydia Jane Orford, daughter of William Orford of Toronto. He was the father of four sons and five daughters. Fleming had an active interest in thoroughbred horses. Robert John Fleming died in 1925 and was buried in
Mount Pleasant Cemetery, Toronto. ==References==