Full of goodness or man of prayer
Derived from the Irish name Deaglán, it is most famously associated with Saint Declan, one of the early Christian missionaries to Ireland. The name is composed of the elements 'dag' meaning good and 'lan' meaning full. It has seen a significant rise in popularity in the United States since the late 1990s.
About 2,570 boys were named Declan in 2025.
US births per 5-year period, 1990–present (SSA data).
English professional footballer
British television presenter and comedian
Birth name of singer-songwriter Elvis Costello
English singer known for his debut album 'Declan'
Character in the television series Revenge · Revenge
Main protagonist in the series Frontier · Frontier
Character in the television series Psych · Psych
The same feel as Declan — far less common.
Hidden gems that stand out.
