Dudley-Williams is given as "of the City and of the County of the City of Exeter" in the London Gazette, but as "of the City and co of Exeter" in Burke's Peerage (2003, 107th edn), p 1193. The Roll of Baronets give it as “of Exeter” only.
Dillwyn-Venables-Llewelyn is given as “of Penllergaer in Llangyfelach and of Ynis-y-gerwn in Cadoxton juxta Neath in the County of Glamorgan” in the London Gazette, but as “of and of Ynis-y-gerwn” in Burke’s Peerage (2003, 107th edn), p 1151.
Chadwyck-Healey is given as “of Wyphurst in the parish of Cranleigh in the County of Surrey and of New Place in the Parish of Luccombe in the County of Somerset” in the London Gazette and as “of Wyphurt, Cranleigh, Surrey and New Place, Luccombe, Somerset” in Burke’s Peerage (2003, 107th edn), p 740. Roll of Baronets give as “of Wyphurt and New Place”.
Though to be fair, writing out the heading of "Dillwyn-Venables-Llewelyn, of Penllergaer, Llangyfelach and of Ynis-y-gerwn, Cadoxton juxta Neath, Glamorganshire" is a mouthful!
S.S.