Sorry for the delay. This is FYI. Your #2 Walter (Sept 1825), his son John (1858) was married to Eliza (Lillian) Jane Cameron of Idaho USA. They were married in Summerstown area Apr 3 1917 and went back to states and ranched. They returned home after John had a stroke and then he died Apr 24 1939 Summerstown ON. No children.
Your Walter # 2- had a son Walter (1864) married Susie jane Burns-born Jul 4 1879 Glen Walter, Glengarry Co Ontario, died Aug 15 1960, married Feb 16 1898.
Now for my dilema. Walter 1864 is the last birth entry in the family bible from 1825. Where did you find James Walter McG spouse Susan and William James spouse Sarah Shaw Campbell?? This is news to us.
Thanks for your time. Heather