Gwilym moelelo wa lebitso le letle: E thabileng, E fanang ka, Botsoalle, E na le bokhoni, Bōpo. Fumana Gwilym moelelo oa lebitso.
Gwilym tšimoloho ea lebitso la pele. Welsh form of William. Fumana Gwilym tšimoloho ea lebitso la pele.
Gwilym lebitso la diminuti: Gwil. Fumana Mabitso a marang-rang a Gwilym.
Mabitso a sa tšoaneng bakeng sa Gwilym linaheng le lipuo tse sa tšoaneng: 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. Fumana Gwilym ka lipuo tse ling.
Mabitso a tloaelehileng ka ho fetisisa ka lebitso Gwilym: Williams, Panah-williams, Panah. Fumana Lethathamo la mabitso a nang le lebitso Gwilym.
Mabitso a tloaelehileng ka lebitso la ho qetela Saunderson: Liam, Roman, Velda, Tomika, Ray, Román. Fumana Mabitso a tsamaeang le Saunderson.