Guillermo (Spaanse)
Gwil, Gwillym, Gwilym, Gwilim, Guillermo, Viljem, Uilleam, Vilhelm, Guilherme, Wiremu, Vilhelms, Guglielmo, Liam, Uilliam, Vilhjálmur, Vilmos, Vili, Guillaume, Viljami, Vilhelmi, Ville, Vilhelmo, Vilchjo, Will, Bill, Billy, Willy, Willem, Vilem, Gwilherm