this is all I found here at acom
Name: Gidean Lock
Event Type: Marriage
Marriage Date: 1 Oct 1822
Marriage Place: Philadelphia, Philadelphia, Pennsylvania
Organization Name: Union Methodist Episcopal
Elizabeth Hunt

and this
Name: William Martin
Declaration Port: Philadelphia, Pennsylvania
Declaration Date: 15 Dec 1819
Age: 21
Birth Year: abt 1798
Birthplace: Salem, New Jersey
Residence: Philadelphia, Pennsylvania
Witness Name: Gideon Lock
Archive Publication: M1880
Archive Roll: 22

there is a tree here that lists his parents as...
John Locke
Birth ABT 1712 in Gloucester, , New Jersey, USA
Death 15 Aug 1791 in Swedesboro, Gloucester, New Jersey, USA

Mary Tomlin
Birth 28 Feb 1759 in Gloucester, , New Jersey, USA
Death 23 Dec 1818

but there was such a couple
Name: Mary Tomlin
Event Type: Marriage
Marriage Date: 23 Jun 1780
Marriage Place: Woolwich, Gloucester, New Jersey
Spouse Name: John Lock
Organization Name: Trinity Episcopal Church



I am not related.
You prob. know all this.

Regards,

Connie