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Male Andrew Johnston Click to view Andrew Johnston in the family tree

Andrew was born in 1748.1   Andrew's father was Archibald Johnstone and his mother was Esther Allston.  His maternal grandparents were William Allston and Esther Mahboeuf.  He was an only child.1 

Family Details of Andrew's family with Sara McKewn

1 phelps2185.FTW
Further source/citation:
World Family Tree Vol. 16, Ed. 1 @ Tree #2185