Russ, I just checked my family tree and I have a William MacKenzie (McKenzie) married to a Jessie Forbes. They are buried in West Branch Cemetary, West Branch, Pictou Co. NS. I have him born about 1818 and died about 1891. Jessie Forbes was born Dec 16 1831 and died Oct. 12 1923. They had 7 children - Isabella, Alexander, Jessie, Roderick, Mary, Don, Annie. The daughter Isabella is my great grandmother. She married a Gammon from the River John area. Have no information on the McKenzie clan prior to William (only just what I gave you). These are relations on my mother's side of the family.
Hope to hear from you.
Ann Belcham
PS I live in British Columbia but have been back to Nova Scotia. I have several people working on my mothers family tree.