Harriet married Thomas Thynne (maid. name Viscount Weymouth) in 11/5/1820 in ST MARYLEBONE, LONDON. Thomas (son of Thomas ( 2nd Marquess of Bath) Thynne and Isabella Elizabeth Byng) was born on 9 Apr 1796 in Longleat, Wiltshire, , England; died on 16 Jan 1837 in Cucklington, Somerset, , England. [Group Sheet] [Family Chart]