Declan Name Meaning

Declan is a masculine name of Irish origin and an anglicized form of the Irish name Deaglán. It is closely associated with Saint Declan, a fifth-century Irish missionary traditionally connected with the Déisi people and the monastery at Ardmore. The exact original meaning of the name is uncertain, although some sources suggest its first element may relate to an Old Irish word meaning “good.” Declan has become familiar in the United States and other English-speaking communities while retaining its distinctive Celtic background. At Baby Name Care, we explore the cultural history and linguistic roots behind names, and Declan offers a traditional Irish choice with an enduring historical connection.

The name Declan is associated with Irish, Old Irish.