John Hamer was born 27 June 1686 in Amsterdam, North Holland, Netherlands and died 12 October 1750 Annapolis, Maryland, United States of unspecified causes.
Children
| Name | Birth | Death | Joined with |
| Elizabeth Hamer (1711-1789) | 14 May 1711 Annapolis, Maryland, United States | 13 September 1789 Queen Anne, Maryland, United States | Robert Knapp Clothier (1707-1775) |
Siblings