Isabella Bennet, 2nd Countess of Arlington, was born circa 1668 to Henry Bennet (1618-1685) and Elisabeth van Nassau-Beverweerd (1633-1718) and died 7 February 1723 of unspecified causes. She married Henry FitzRoy, 1st Duke of Grafton (1663-1690) 1 August 1672 Goring House. She married Thomas Hanmer, 4th Bart (1677-1746) 14 October 1698 . Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Willem van Oranje (1533-1584)/s, Hugh Capet (c940-996)/s.
|Offspring of Isabella Bennet and Henry FitzRoy, 1st Duke of Grafton (1663-1690)|
|Charles FitzRoy, 2nd Duke of Grafton (1683-1757)||25 October 1683 Arlington House, Westminster, England, United Kingdom||6 May 1757 Euston, England, United Kingdom||Henrietta Somerset (1690-1726)|