John married Caroline Elizabeth COSTELLO on 17 May 1893 in Pembroke, Renfrew, Ontario, Canada. Caroline (daughter of Francis COSTELLO and Catherine Mary MACDONALD) was born on 10 Jan 1869 in Westmeath Twp., Renfrew, Ontario, Canada; died on 11 Jan 1939 in Sudbury, Sudbury, Ontario, Canada; was buried in Sudbury, Sudbury, Ontario, Canada. [Group Sheet] [Family Chart]

1. Frank T. LEACH was born in Jan 1894 in , , Ontario, Canada; died in 1963; was buried in Sudbury, Sudbury, Ontario, Canada.
2. Eva Muriel LEACH was born in 1895 in Smiths Falls, Lanark, Ontario, Canada; died in 1966; was buried in Sudbury, Sudbury, Ontario, Canada.
3. Walter John LEACH was born on 27 Mar 1897 in Smiths Falls, Lanark, Ontario, Canada; and died.
4. Anna Bella LEACH was born on 15 Jun 1899 in Montague Township, Lanark County, Ontario; and died.
5. Leonard Herbert LEACH was born on 1 Mar 1900 in Chelmsford, Sudbury, Ontario, Canada; died on 24 Jul 1918 in Sudbury, Sudbury, Ontario, Canada; was buried in Sudbury, Sudbury, Ontario, Canada.
6. Edith Irene LEACH was born in 1902 in Chelmsford, Sudbury, Ontario, Canada; died in 1995; was buried in Sudbury, Sudbury, Ontario, Canada.
7. Elizabeth Agnes LEACH was born on 20 Jul 1903 in Chelmsford, Sudbury, Ontario, Canada; and died.
8. William Carroll LEACH was born in May 1905; died in 1977; was buried in Wharncliffe, Algoma, Ontario, Canada.
9. Cecil George LEACH was born about 1907 in Larchwood, Algoma, Ontario, Canada; and died.
10. Carrie Vivian LEACH was born on 19 Jun 1909 in Larchwood, Algoma, Ontario, Canada; died in 1975; was buried in Barrie, Simcoe, Ontario, Canada.
11. Myrtle Emma LEACH was born on 10 Dec 1911 in Waters Twp., Algoma, Ontario, Canada; and died.
12. Sybil Jane LEACH was born on 31 Mar 1914 in Sudbury, Sudbury, Ontario, Canada; died on 10 Mar 2006; was buried in Sudbury, Sudbury, Ontario, Canada.