David McPherson born about 1849 died in Michigan

David McPherson was born in Nova Scotia, raised in McGillivray Twp. in Ontario and then moved to Michigan with his Half Brother James William McPherson.
Locations where he probably lived are Akron, Wisner and the Bay City area.

David and his brother Edmund (my great-grandfather) were whole brothers and the illegitimate sons of ***** McPherson.I have nearly all the family tree data going back to the 1500's.
My mother would very much like to know the fate of her Uncle David and if he has left descendants I would love to share the truth about their very rich heritage.

The family branches have been out of touch ever since WWII or even earlier.

Thank you,