Nielsen Hayden genealogy
Family: Robert Throckmorton / Katherine Marrow (F12781)
m. Abt 1477Thomas Throckmorton (1412-1472) 
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Margaret Olney ( -1493)
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John Throckmorton (1460-1507)  |
| William Marrow, Mayor of London (1410-1464) |
| Robert Throckmorton (1451-1518)
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| Katherine Marrow ( -1505)
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| Richard Throckmorton ( -1547) |