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Tiarnach

Quick answerTiarnach is an Irish name derived from the Old Irish word "tiarna" meaning "lord" or "master," with the diminutive suffix "-ach" added to form a personal name.

Irish (Rare) · Boy · 2 syllables

T
Top 500

Popularity & facts

Relative popularity index, 2010–2025
GenderBoy
US Rank#243
TrendVintage
Peak year2001
Syllables2
OriginIrish (Rare)
LanguageIrish (Rare)
CultureIrish (Rare)
ReligionChristianity
Letters8
Numerology11 Chaldean 22
Global rank#243

Popularity over time

Popularity index
Hover the line to see any year. 100 = most popular.

Historical popularity from 1880–2025 · US Social Security Administration data

About the name Tiarnach

Tiarnach is an Irish name derived from the Old Irish word "tiarna" meaning "lord" or "master," with the diminutive suffix "-ach" added to form a personal name.

Cross-referenced with Wikidata/Wikipedia. AI-assisted, community-reviewable. Suggest an improvement.

Etymology

Tiarnach is an Irish name derived from the Old Irish word "tiarna" meaning "lord" or "master," with the diminutive suffix "-ach" added to form a personal name. The name is primarily used in Irish and Scottish Gaelic cultures, with historical attestation in medieval Irish Christianity, notably associated with Saint Tiarnach of Clonmacnoise (6th century).

Tiarnach currently ranks #243 in the United States as a boy's name. It reached its peak popularity around 2001.

Variants & nicknames

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