Galligan
An Irish surname usually explained as meaning “descendant of the stranger” or from a Gaelic word for “white.”
The #8,938 most common surname in the United States (2010 Census) — about 1 in every 84,288 Americans shares it.
Etymology
Most historical sources treat Galligan as Irish Gaelic. One tradition links it to a form like Gealagan, from geal, meaning “white” or “bright.” Another, also found in older surname collections, connects it with gall, “stranger” or “foreigner,” giving the sense “descendant of the stranger.” The name may therefore reflect either a descriptive nickname or an older clan-family formation in Irish.
History
The surname is well attested in Irish surname studies and appears in records of Irish families in the 19th and early 20th centuries. In English-language sources it is often grouped with other Ulster and Connacht surnames, though the exact local origin can vary by family line. Modern bearers are especially associated with Ireland and the Irish diaspora, including the United States.
Origin
Regions
Variant spellings
Fun fact
Older sources disagree on the name’s root, which is common with Irish surnames: some derive it from “white/bright,” others from “stranger.”
From the historical record
“OF FAMILY NAMES. 187 GALLIGAN. (Gaelic.) From Gealagan, white. GALLUP. (Ger.) A corruption of Gottlieb, from Qott, God, and tieb, love or praise — God's praise. GALTorGUALT. A bush, of hair. Welsh, GwaUt. GAINNES. Gaelic, Gainne, a dart, an arrow, a shaft; given because of expertness in the use of these weapons of…”
— An Etymological Dictionary of Family and Christian Names