Gwilherm ngaran hartos pangalusna: Berehan, Volatile, Friendly, Attentive, Serius. Meunang Gwilherm hartina ngaran.
Gwilherm asal ngaran hareup. Breton form of William. Meunang Gwilherm asal ngaran hareup.
Ngaran sinonim pikeun Gwilherm di béda nagara jeung basa: Bill, Billie, Billy, Guglielmo, Guilherme, Guillaume, Guillem, Guillermo, Gwil, Gwilim, Gwillym, Gwilym, 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. Meunang Gwilherm dina basa séjén.
Paling ngaran umum kalawan ngaran tukang Longin: Bo, Jannet, Olen, Willy, Ray. Meunang Ngaran anu buka kalayan Longin.