Gwilym eng yaxshi nom ma'nolari: Quvnoq, Saxiy, Do'st, Vakolatli, Ijodiy. Qabul qiling Gwilym ismining ma'nosi.
Gwilym ismining kelib chiqishi. Welsh form of William. Qabul qiling Gwilym ismining kelib chiqishi.
Gwilym nomi noma'lum: Gwil. Qabul qiling Gwilym uchun taxalluslar.
Boshqa mamlakatlar va tillarda, Gwilym uchun alohida ismlar: 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. Qabul qiling Gwilym boshqa tillarda.
Gwilym nomi bilan eng keng tarqalgan soyisimler: Williams, Panah-williams, Panah. Qabul qiling Gwilym nomi bilan familiyalar ro'yxati.
Markwick ismiga ega bo'lgan eng keng tarqalgan ismlar: Reinaldo, Jocelyn, Keven, Guillermo, Meghan. Qabul qiling Markwick bilan ketadigan ismlar.