The Hon. Charles Ernest Thynne, a solicitor, married JW's niece Annie Haden in 1880. He was the son of Rev. Lord Charles Thynne and Harriet Frances Bagot and a connection of the Marquess of Bath. He was Assistant Solicitor to HM Customs between 1880 and 1906.
Burke's Peerage and Baronetage, 106th edition, Mosley, C. (ed.), 2 vols, 1., Crans, Switzerland, 1999.