William Petty, 2nd Earl of Shelburne British Prime Minister (1737-1805) (1737–1805) Parents Mary FitzMaurice John Petty, 1st Earl of Shelburne Children Lady Louisa Fitzmaurice John Petty, 2nd Marquess of Lansdowne Henry Petty-Fitzmaurice, 3rd Marquess of Lansdowne Siblings Thomas FitzMaurice Partners Lady Sophia Carteret Louisa Petty, Countess of Shelburne
