Save Gender Masculine Usage Welsh Mythology Pronounced Pron. [ˈni.ʃɛn] [key·simplify] Other Forms FormsNissyen Meaning & History Nisien is a figure in Welsh mythology, the son of Penarddun and Euroswydd and twin brother of Efnysien.
indicate the level to which a name has been verified. indicate the level to which a name has been verified. indicate the level to which a name has been verified.