Of Irish origin.
From the Irish name “Deaglán”.
Meaning is uncertain.
Sources mention a possible meaning to be “man of prayer”.
Other sources mention that the name derives from two words “dag”, meaning good and “lan” meaning full, therefore Declan means “full of goodness”.
Saint Declan was a missionary to Ireland during the 5th century, who founded the Monastery of Ardmore, Aird Mhór.
Famous bearers are Declan McManus (birth name of Elvis Costello), Declan Quinn, Declan O’Rourke, Declan Kidney, Declan Donnelly.
Singer, songwriter, producer Elvis Costello has won many awards during his career, including a Grammy and, along with his former band the Attractions, they are inducted in the “Rock and Roll Hall of Fame”.