Prothero, Protheroe, Prothers, Prytherch, Rothero, Rotheroe, Rotherough, Ruddock, Rudz, Ruther, Rutherch, Rhydderch, Rhodri, Roderick
Origin Wales, ap (son of) Rhydderch. Anglicised via misspelling and pronunciation. In use in Ancient Welsh folklore via Rhydderch. Found worldwide but predominantly found in Wales in the Radnorshire, Breconshire and Ynys Mon areas.