# McWilliam

> English word · Proper noun

## Definitions
1. A surname.

## Etymology
Anglicized form of Irish and Scottish Gaelic Mac Uilleim (“son of Uilleam”), a Gaelicized form of William.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/mcwilliam