The meaning of the name Declan is Full Of Goodness. The origin of the name Declan is Irish. This is the culture in which the name originated, or in the case of a word, the language.
Common nick names for the name Declan include Dec and Dee. Famous people with the name Declan tend to be of Irish descent. Athletes include Declan Kidney, Declan Meehan, and Declan O’Sullivan. Musicians include Declan Affley and Declan deBarra. Declan is the real first name of musician Elvis Costello. There was even a saint named Declan (Declan of Ardmore). A fictional Declan include Declan Coyne from the television show Degrassi: the Next Generation.