79%RatingSave Gender Feminine Usage Cornish, Welsh Meaning & History From Old Cornish moroin meaning "maiden, girl" (related to the Welsh word morwyn [1]). This was the name of a 6th-century Cornish saint, said to be one of the daughters of Brychan Brycheiniog. Related NamesFamily Tree·Details VariantsMorwen(Cornish) Morwen(Welsh) PopularityDetails Last ranked #801 in 1998 England and Wales People think this name isRate·Details classic formal upper class natural wholesome strong refined strange complex serious Categories chastity, comedians, Poldark characters, purity, saints, Saturday Night Live cast, youth Sources & References Matasović, Ranko. Etymological Dictionary of Proto-Celtic. Brill, 2009, page 267.