Family: Francis Seymour-Conway, 1st Marquess of Hertford / Lady Isabella Fitzroy, Countess of Hertford (F1100)
m. 29 May 1741Drag or scroll to see more of the chart.
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 | Charles FitzRoy, 2nd Duke of Grafton (1683-1757)
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 | Lady Henrietta Somerset (1690-1726) |
| Francis Seymour-Conway, 1st Marquess of Hertford (1718-1794) |
| Lady Isabella Fitzroy, Countess of Hertford (1726-1782)
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| Vice-Admiral Lord Hugh Seymour (1759-1801)  |