Descendant of Ceallachán; bright-headed or strife
Calihan is a modern anglicized variant of the Irish surname Ó Ceallacháin. The root name Ceallachán is a diminutive of Ceallach, which is traditionally interpreted as meaning either 'bright-headed' or 'frequent in churches,' though some scholars link it to 'strife' or 'war.'
Less common today
Calihan isn't in the latest US Top 1000. It last peaked at #3,073 in 2020.
US births per 5-year period, 1990–present (SSA data).
