William married Augusta Lavinia Priscilla Ponsonby on 18 Mar 1834 in All Souls,St Marylebone,London,England. Augusta (daughter of Sir John William(4th Earl of Bessborough) Ponsonby and MARIA FANE) was born on 11 May 1814 in Brympton Park, Somerset; died on 19 Nov 1904 in Wimbledon, London, England. [Group Sheet] [Family Chart]

1. Mary Caroline Louisa Petty Fitzmaurice was born in 1835; died on 17 Sep 1927.