These people are in my family line. Margaret Stewart (b. 1841 in Scotland), married Neil McGillis (b. 1832 in Dundee, PQ),(s/o Neil McGillis & Mary McLeod, both from Isle of Skye.) Neil and Margaret had 4 children, all born in Lancaster, Glengarry Cty. - John,(b. 1863) Wm. Neil,(b. 1865) Janet Mary(b. 1867)and James Cattanach (b.1868). Margaret died Nov. 22,1868, age 27.
Neil remarried Dec. 1869 and I am descended from his second wife, Flora McLennan. These people are all Presbyterian and Margaret's tombstone is in the cemetery at St. Andrew's Presbyterian Church in S. Lancaster. I saw it in 2000 and it had fallen or been pushed over.
Neil's father was a farmer, but as the second son, he did not inherit the farm and became a tinsmith and had a hardware store in Lancaster.
The daughters Ann and Mary and son Lauchlin mentioned in your message,are not of this family.