Gwillym kacha mma aha pụtara: Enyịn, Oge a, Okike, Obodo, Eji obi ụtọ. Nweta Gwillym pụtara aha.
Vasiliadis kacha mma aha nna pụtara: Oké njọ, Emesapụ aka, Ifịk, Eji obi ụtọ, Iwe. Nweta Vasiliadis 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 Vasiliadis kasị nkịtị na Greece. Nweta Vasiliadis 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 Vasiliadis: William, Nicholas. Nweta Aha na-aga na Vasiliadis.
Ndakọrịta nke Gwillym na Vasiliadis bụ 79%. Nweta Ndakọrịta nke Gwillym na Vasiliadis.