# McKiernan

> English word · Proper noun

## Definitions
1. A surname from Irish.

## Etymology
Anglicized form of Irish Mac Thighearnáin (“son of Thighearnán”), a diminutive of tighearna (“lord, master”).

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