Isobel Dunlop

Isobel Campbell married Lt. Robert Campbell (born say 1630)

From Some Kintyre Stewarts; A.I.B. Stewart; The Scottish Genealogist; Volume XLI, Journal iii; 1994; No. 3; page 97

I think there is no doubt that Rev. Charles' father was Archibald Stewart who first appears in Kintyre in 1683 when he was apparently in Tangie. He was married to Alice Campbell, the only child of Lt. Robert Campbell and his wife Isabel Dunlop. Lt. Campbell's Will is recorded in the Argyll Commissary Books on 18th March 1676. He was tacksman of the Drum and the two Ballergies situated near Kilkenzie village, about four miles north of Campbeltown on the Argyll estate.

References

1. https://www.wikitree.com/wiki/Stewart-29852
2. Some Kintyre Stewarts; A.I.B. Stewart; The Scottish Genealogist; Volume XLI, Journal iii; 1994; No. 3; page 97 http://www.ralstongenealogy.com/number16kintmag.htm#start