The title of Marquess of Bath was created in the Peerage of Great Britain in 1789 for Thomas Thynne, 3rd Viscount Weymouth, a former Secretary of State. He was a genealogical co-heir of the Granville Earls of Bath through his mother, the former Louisa Carteret. She was the second daughter of John Carteret, 2nd Earl Granville, who was a grandson of John Granville, 1st Earl of Bath through the female line.
Lord Bath holds the subsidiary titles of Viscount Weymouth (1682) and Baron Thynne, of Warminster in the County of Wiltshire (1682), both in the Peerage of England, and is an English Baronet, styled "of Caus Castle".
Thynne baronets (1641)
- Sir Henry Frederick Thynne, 1st Baronet (1615-1680
- Sir Thomas Thynne, 2nd Baronet (1640-1714) (created Viscount Weymouth in 1682)
Viscounts Weymouth (1682)
Marquesses of Bath (1789)
his son and heir: Ceawlin Thynne, Viscount Weymouth
External Links
