John married Sarah Margaret Reeves 8 May 1877, Lower Freetown, , Prince Edward Island, Canada. Sarah (daughter of Thomas Reeves and Sarah Jane Strang) was born 27 Feb 1855, Lower Freetown, , Prince Edward Island, Canada; died 24 Feb 1922, Edmonton, , Alberta, Canada. [Group Sheet]

1. Eleanor Jane Clark was born 28 Jan 1878, Wilmot Valley, Lot 19, Prince Edward Island, Canada; died 16 Jan 1913, Saranac Lake, , New York, United States.
2. Margaret Isabella Clark was born 19 Dec 1879, Wilmot Valley, Lot 19, Prince Edward Island, Canada; died 1979.
3. Peter Gordon Clark was born 12 May 1881, Wilmot Valley, Lot 19, Prince Edward Island, Canada; died 3 Feb 1960, Summerside, , Prince Edward Island, Canada.
4. Theophilus Thomas Clark was born 14 Apr 1883, Longmont, Boulder, Colorado, United States; died 1943, Otthon, , Saskatchewan, Canada.
5. William Isaac Clark was born 27 Jun 1885, Longmont, Boulder, Colorado, United States; died 1886, , , Colorado, United States.
6. William Isaac Clark was born 5 Mar 1887, Kensington, , Prince Edward Island, Canada; died 10 Oct 1964, Blackfalds, , Alberta, Canada.
7. Annie Maude Clark was born 28 Oct 1888, Kensington, , Prince Edward Island, Canada; died Yes, date unknown.
8. Horace Easton Clark was born 20 Dec 1890, Summerside, , Prince Edward Island, Canada; died 1975.