Mcwilliam as fheàrr sloinneadh chiall: Droch, Temperamental, Furachail, Gnìomhach, Sunndach. Faigh Mcwilliam brìgh sloinneadh.
Mcwilliam an tùs. Means "son of William" in Gaelic. Faigh Mcwilliam an tùs.
Ainmean-cinnidh a 'samhlachadh airson Mcwilliam ann an diofar dhùthchannan agus cànanan: Mac uileagóid, Mcelligott, Wilcox, Wilkerson, Wilkie, Wilkins, Wilkinson, Willems, Willemse, Willemsen, William, Williams, Williamson, Willis, Wilms, Wilson. Faigh Mcwilliam ann an cànanan eile.
As ainm cumanta sloinnidhean le Maudina: Williams. Faigh Liosta de na sloinnidhean ainm le Maudina.
As ainmean cumanta le ainm mu dheireadh Mcwilliam: Horacio, Martin, Dena, Burton, Jordan, Horácio, Jordán, Martín. Faigh Ainmean a 'dol le Mcwilliam.