Milligan

Source: Gaelic

Root Word: Ó Maolagáin

Derived From: Ó Maolagáin

Meaning: Ó Maolagáin means "devoted follower" or "red head" in Irish Gaelic.

Popularity History: Milligan was a surname that became widespread in Ireland in the 19th century and later spread to other English-speaking countries with immigration.