 | Generation 1 - Asahel Azahel Underwood: Born - 14 Apr 1773 - York County, Pennsylvania, USA |
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| Generation 1 - Asahel Azahel Underwood: Died - 2 Jun 1781 - York County, Pennsylvania, USA |
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 | Generation 1 - Asahel Azahel Underwood: Buried - - Wellsville, York County, Pennsylvania, USA |
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 | Generation 2 - Benjamin Underwood: Born - 1728 - Warrington, Bucks, Pennsylvania, USA |
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| Generation 2 - Benjamin Underwood: Buried - - Wellsville, York County, Pennsylvania, USA |
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 | Generation 2 - Benjamin Underwood & Susannah Griest: Married - 7 Jan 1750 - Warrington, York, Pennsylvania, USA |
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| Generation 2 - Susannah Griest: Buried - - Wellsville, York County, Pennsylvania, USA |
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 | Generation 3 - Alexander Underwood, Quaker Minister: Born - 1688 - Anne Arundel County, Maryland, USA |
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| Generation 3 - Alexander Underwood, Quaker Minister: Died - 31 Oct 1767 - York County, Pennsylvania, USA |
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| Generation 3 - Alexander Underwood, Quaker Minister: Buried - - Wellsville, York County, Pennsylvania, USA |
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 | Generation 3 - Jane Underwood: Born - 1687 - Chester County, Pennsylvania, USA |
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| Generation 3 - Jane Underwood: Died - 25 Apr 1743 - Chester County, Pennsylvania, USA |
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 | Generation 3 - Jane Underwood: Buried - - West Marlborough Township, Chester County, Pennsylvania, USA |
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 | Generation 3 - John Griest Of Bethel & Martha Baldwin: Married - 13 Apr 1713 - Chester, Pennsylvania, USA |
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| Generation 3 - Martha Baldwin: Born - 16 Dec 1694 - Chester County, Pennsylvania, USA |
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 | Generation 4 - George Griest, Unconfirmed Parents: Born - 1665 - Coughton, Warwickshire |
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 | Generation 4 - Ann Bezer: Born - 21 Jun 1669 - Rowde, Wiltshire |
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 | Generation 5 - John Griest, The Pioneer: Born - Abt 1630 - England |
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 | Generation 5 - John Griest, The Pioneer: Died - 1 Jun 1688 - Salem, New Jersey, USA |
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 | Generation 5 - Ann Bult: Died - 1730 - Salem County, New Jersey, USA |
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| Generation 5 - Edward Bezer Beezer: Born - 1 Jan 1641 - Rowde, Wiltshire |
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| Generation 5 - Edward Bezer Beezer & Ann Fry: Married - 1664 - Rowde, Wiltshire |
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1773 - 1781 (8 years)
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