Boy Teithi Teithi means: Mythical son of Gwynham. Teithi Name Origin: Celtic Share your thoughts about Teithi Share Popularity Infographic of Teithi name meaning, which is Mythical son of Gwynham Ask your friends & family about Teithi… Share Pin Tweet Email Text Teithi Name Popularity How popular is the name Teithi? Here’s everything we know. Sorry, popularity data for the name Teithi is not available. Share your thoughts on the name Teithi Cancel ReplyYour email address will not be published. All fields are required *Name * Email * Your Thoughts * Δ Search Baby Names Quick Search Search Go Advanced Search Name Starts With Ends With Gender Any Boys Girls Only show unisex names Current Popularity [U.S.] Any More Popular Less Popular Origin Select origin… English Latin Hebrew Greek German Irish French American Spanish Arabic Aboriginal African American Ancient Anglo-Saxon Arabic Aramaic Armenian Arthurian Legend Asian Aztec (Nahuatl) Bulgarian Celtic Chinese Danish Dutch Egyptian English European French Gaelic German Greek Hebrew Hungarian Indian (Sanskrit) Indonesian Irish Israeli Italian Japanese Latin Modern Native American Persian Polish Polynesian Portuguese Russian Scandinavian Scottish Slavic Spanish Turkish Unknown Vietnamese Welsh Yiddish Meaning Number of Letters Min Max Syllables [BETA] Min Max Search Baby Names