Gwillym kacha mma aha pụtara: Enyịn, Oge a, Okike, Obodo, Eji obi ụtọ. Nweta Gwillym pụtara aha.
Ewen kacha mma aha nna pụtara: Okike, Enyi na enyi, Eji obi ụtọ, Enyịn, Oké njọ. Nweta Ewen pụtara aha nna.
Gwillym si malite aha mbụ. Welsh form of William. Nweta Gwillym si malite aha mbụ.
Gwillym aha diminutives: Gwil. Nweta Nicknames maka Gwillym.
Aha ikpeazụ Ewen kasị nkịtị na Falkland Islands. Nweta Ewen aha nna na-agbasa.
Agakọta aha maka Gwillym na mba dị iche iche na-asụ asụsụ: Bill, Billie, Billy, Guglielmo, Guilherme, Guillaume, Guillem, Guillermo, Gwilherm, Illiam, Jami, Jelle, Liam, Pim, Uilleag, Uilleam, Uilliam, Ulick, Vilĉjo, Vilém, Vilhelm, Vilhelmas, Vilhelmi, Vilhelmo, Vilhelms, Vilhjálmur, Vilho, Vili, Viliam, Vilim, Vilis, Viljami, Viljem, Viljo, Vilko, Ville, Villem, Vilmos, Wil, Wilhelm, Wilhelmus, Wilkin, Wilky, Will, Willahelm, Willem, Willi, William, Willie, Willy, Wilmot, Wim, Wiremu, Wöllem, Wullem, Wum. Nweta Gwillym na ndị ọzọ asụsụ.
Kasị nkịtị aha na aha ikpeazụ Ewen: Hosea, Chauncey, Claudio, Tora, Trinidad, Cláudio. Nweta Aha na-aga na Ewen.
Ndakọrịta nke Gwillym na Ewen bụ 84%. Nweta Ndakọrịta nke Gwillym na Ewen.