William was born in 1721 in Kincardineshire, Ayrshire, Scotland, the son of Robert Burness but his mother is unknown.
He died in 1784. The place is not known.
His wife was Agnes Broun, who he married on 15 Dec 1757. The place has not been found. Their only known child was Robert (1759-1796).
might also be Burns or even total fiction... except this came from
Barbara J Daugherty, 2 Alexander Drive, Wenonah, NJ 08090
who has been very reliable with everything else.