Macwilliam as fheàrr sloinneadh chiall: Càirdeil, Gnìomhach, Fortanach, Cruthachail, Temperamental. Faigh Macwilliam brìgh sloinneadh.
Macwilliam an tùs. Means "son of William" in Gaelic. Faigh Macwilliam an tùs.
Ainmean-cinnidh a 'samhlachadh airson Macwilliam ann an diofar dhùthchannan agus cànanan: Mac uileagóid, Mcelligott, Wilcox, Wilkerson, Wilkie, Wilkins, Wilkinson, Willems, Willemse, Willemsen, William, Williams, Williamson, Willis, Wilms, Wilson. Faigh Macwilliam ann an cànanan eile.
As ainm cumanta sloinnidhean le Shanyice: Williams. Faigh Liosta de na sloinnidhean ainm le Shanyice.