This game is wonderful, as regards involvement of "way-out" saints. Milton Abbas's Abbey Church must be in running for championship re strange and elaborate dedications: with its being dedicated to St. Mary, St. Sansom and St. Bradwalader. The only other instance I can find of this last name: involves St. Breward, Cornwall (between Wadebridge and Camelford): name whereof, a worn-down form of (approximate) name of same guy, decicatee of village's church -- here, St. Branwalader. (Per Wiki, the place was commonly known until the 19th century by a corrupt form of the name, "Simonward". One feels that this stuff puts the "Throat Warbler Mangrove" nonsense, well and truly in the shade.)Milton Abbas, Dorset, is also owned in its entirety by a private group/estate
Further issues to do with the above-bolded North Yorkshire settlement and "different tongues / ancient history": the place's present-day name is usually reckoned to be a worn-down form of its name as a Roman settlement, Cataractonium = "place of a waterfall" in a mixture of the Latin and Greek languages; some, however, suggest that a contribution may have been made here by the Celtic name Catu-ratis = "battle ramparts". There is cited in support of the latter theory, the spelling (here transliterated from the original Greek) from Claudius Ptolemy's Geography, compiled about 150 AD: "Catouractonion". Another bit of mild dissension / confusion in which Ptolemy's work plays a part, involves the Roman name of what is now Chesterfield, Derbyshire: Uxellum or Uxela ?As one may expect, Hereford also has a name in Welsh, that being Henffordd. Logical, perhaps, given its proximity to the Welsh border.
One place however that is slightly more usual that has a Welsh exonym is Catterick, North Yorkshire, which features prominently in Welsh folklore as the location of Brwydr Catraeth, the Battle of Catterick. The battle of Catraeth took place between the Brythonic peoples of the Gododdin, and the invasive Angle tribes from Germany. The result - a win for the Angles, signified the beginning of the end for Welsh rule across northern England and Scotland, as the Hen Ogledd began to lose Territory.