Gwilym tikanga ingoa pai: Koa, Ohaoha, Ratarata, Mātau, Auaha. Haere Gwilym tikanga o te ingoa.
Blass pai tikanga ingoa: Auaha, Mātau, Hūkokikoki, Ahua, Ohaoha. Haere Blass tikanga o ingoa.
Gwilym takenga o te ingoa tuatahi. Welsh form of William. Haere Gwilym takenga o te ingoa tuatahi.
Gwilym diminutives ingoa: Gwil. Haere I tapaina a hoki Gwilym.
Ingoa faaauhia hoki Gwilym i roto i whenua rerekē me ngā reo: 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. Haere Gwilym i ētahi atu reo.
Ingoa whānau te nuinga noa ki te ingoa Gwilym: Williams, Panah, Panah-williams. Haere Rārangi o ngā ingoa whānau ki te ingoa Gwilym.
Te nuinga ingoa noa ki te ingoa whakamutunga Blass: Ilda, Eugene, Jerome, Meta, Glennie, Eugène, Jérôme. Haere Ingoa e haere ki Blass.
Hototahi o Gwilym a Blass he 80%. Haere Hototahi o Gwilym a Blass.