Louisa Thynne, Viscountess Weymouth English noble (1714–1736) Parents Frances Worsley John Carteret, 2nd Earl Granville Children Henry Carteret, 1st Baron Carteret Thomas Thynne, 1st Marquess of Bath Siblings Lady Grace Carteret Georgiana Clavering-Cowper, Countess Cowper Frances Hay, Marchioness of Tweedsdale Robert Carteret George Carteret Lady Sophia Carteret Partners Thomas Thynne, 2nd Viscount Weymouth