Gwillym kacha mma aha pụtara: Enyịn, Oge a, Okike, Obodo, Eji obi ụtọ. Nweta Gwillym pụtara aha.
Rugama kacha mma aha nna pụtara: Oké njọ, Ifịk, Okike, Emesapụ aka, Oge a. Nweta Rugama 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 Rugama kasị nkịtị na Nicaragua. Nweta Rugama 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 Rugama: Brett, Roosevelt, William, Vince, Pasquale. Nweta Aha na-aga na Rugama.
Ndakọrịta nke Gwillym na Rugama bụ 78%. Nweta Ndakọrịta nke Gwillym na Rugama.