Gwilym kacha mma aha pụtara: Eji obi ụtọ, Emesapụ aka, Enyi na enyi, Eru, Okike. Nweta Gwilym pụtara aha.
Patrias kacha mma aha nna pụtara: Obodo, Eji obi ụtọ, Oké njọ, Enyi na enyi, Oge a. Nweta Patrias pụtara aha nna.
Gwilym si malite aha mbụ. Welsh form of William. Nweta Gwilym si malite aha mbụ.
Gwilym aha diminutives: Gwil. Nweta Nicknames maka Gwilym.
Agakọta aha maka Gwilym 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 Gwilym na ndị ọzọ asụsụ.
Kasị nkịtị surnames na aha Gwilym: Williams, Panah-williams, Panah. Nweta List of surnames na aha Gwilym.
Kasị nkịtị aha na aha ikpeazụ Patrias: Jordon, Jae, Wendie, Raymond, Daniel, Dániel, Daníel, Daniël. Nweta Aha na-aga na Patrias.
Ndakọrịta nke Gwilym na Patrias bụ 75%. Nweta Ndakọrịta nke Gwilym na Patrias.