Girl Gwenddydd Gwenddydd means: Merlin’s sister. Gwenddydd Name Origin: Arthurian Legend Share your thoughts about Gwenddydd Share Popularity Infographic of Gwenddydd name meaning, which is Merlin's sister Ask your friends & family about Gwenddydd… Share Pin Tweet Email Text Gwenddydd Name Popularity How popular is the name Gwenddydd? Here’s everything we know. Sorry, popularity data for the name Gwenddydd is not available. Share your thoughts on the name Gwenddydd Cancel ReplyYour email address will not be published.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