33%RatingSave Gender Masculine Usage Old Welsh [1] Meaning & HistoryExpand Links Old Welsh form of Rhydderch. Related NamesFamily Tree·Details Rootsri + derchOther Languages & CulturesRhydderch, Roderick(Welsh) Categories king Sources & References Page at https://www.s-gabriel.org/names/tangwystyl/british1000/appendix4_5.html.