In August 1853 married Sarah "Sally" Duncan (1833–1910), Sally was sister to
W. Butler Duncan, a prominent banker and railroad executive. Before his death in 1885, they were the parents of: • Alexander Duncan Hay (1858–1881), a Lieutenant in the
Royal Artillery who died unmarried while hunting in Leicestershire. • Henrietta Louisa Hay (1862–1944), who died unmarried. • Robert Butler Hay (1864–1912), who married Ella Bulkeley-Johnson, daughter of
Francis Bulkeley Johnson, in 1899. == References ==