Where does “Callahan” come from?
Callahan is an English surname derived from Irish Ó Ceallacháin, a patronymic from the personal name Ceallachán.
Ancestry of “Callahan”, step by step
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Irish | Ó Ceallacháin | — |
| 2 | Irish | Ceallachán | — |