James married Agnes JARDINE in 1847 in Pembroke, Renfrew, Ontario, Canada. Agnes (daughter of James JARDINE and Catherine JOHNSTON) was born on 4 Sep 1810 in , , , Scotland; died on 16 Nov 1887 in Powassan, Parry Sound Dist, Ontario, Canada; was buried in Pembroke, Renfrew, Ontario, Canada. [Group Sheet] [Family Chart]

1. Catherine JOHNSTON and died.
2. Margaret JOHNSTON and died.
3. Mary JOHNSTON and died.
4. Robert JOHNSTON was born on 14 Jan 1848 in Pembroke Twp., Renfrew, Ontario, Canada; was christened on 1 Mar 1849 in St. Andrew's Presbyterian Church Pakenham, Lanark, Ontario, Canada; and died.
5. John JOHNSTON was born on 21 Feb 1850 in Pembroke Twp., Renfrew, Ontario, Canada; was christened on 1 Mar 1851 in St. Andrew's Presbyterian Church Pakenham, Lanark, Ontario, Canada; and died.