Declan — Anglicized form of Irish Deaglán, which is of unknown meaning. Saint Declan was a 5th-century missionary to Ireland.
Anglicized form of the Irish name Deaglán, whose original meaning is uncertain — one traditional reading is deagh, "good", plus lán, "full": full of goodness.
Saintly namesake: Declán of Ardmore was a 5th-century Irish bishop and one of the early Christian missionaries to Ireland. He is the only canonized saint named Declan. (July 24 · 5th century)
Check back in a moment for rank and trend details.