78%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 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.