Erwan Vallerie ː Cloet Gual ?, XIIvet; Cloezguall, XIIIvet; Croezual Foenant, 1285; Croezval, 1349; Croazgual Fuenant, 1368; Crozoal Foenant, 1516; Clohal Foenant, 1536; Crozoal, 1574; Clochol, 1630; Clohar-Foënant, 1731; Clohar-Fouesnant, 1779