1721 - 1775 (53 years)
| Event Map | |
Event
 | Generation 1 - John Harrison: Born - 5 Jul 1721 - Warfield, Berkshire, England |  |  | Generation 1 - John Harrison: Died - Jun 1775 - Gateshead, Durham, England | | | Generation 2 - John Harrison: Born - 29 Mar 1690 - Warfield, Berkshire, England | | | Generation 2 - John Harrison: Died - 1760 - Warfield, Berkshire, England | | | Generation 2 - Elizabeth Martin: Born - 26 Mar 1692 - Warfield, Berkshire, England | |  | Generation 2 - Elizabeth Martin: Died - 1760 - Berkshire, England | | | Generation 3 - Martha Pullin: Born - 29 Oct 1670 - Berkshire, England | |
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