John was born in 1730 in Maryland, the son of Philip Key and Susanna Gardiner.
He died in 1755 in St Mary County, Maryland.
His wife was Cecilia Brown, who he married in ABT 1749. The place has not been found. Their two known children were Philip (1750-1820) and Susanna (c1751-?).
|Source:||Maryland Historical Magazine, Winter 1981 vol 76 number 4|
|Publisher:||The Museum and Library of Maryland History The Maryland Historical Society|