The story behind Declan
A 5th-century Irish saint who preached in Ireland before Saint Patrick's mission.
Numerology
Full numerology breakdown
Declan’s number is 3.
Expression and creativity. Threes are read as communicative and imaginative, with a natural pull toward art, words, or performance.
Related names
More Irish names to consider.
Aoife
“Beauty, radiance” — Girl name
Brigid
“Exalted one” — Girl name
Ciara
“Dark-haired, dark one” — Girl name
Eoin
“God is gracious” — Boy name
Fiona
“Fair, white” — Girl name
Liam
“Strong-willed warrior, protector” — Boy name
Quick answers
About the name Declan.
What does Declan mean?
Declan means “full of goodness.” It carries Irish roots. A 5th-century Irish saint who preached in Ireland before Saint Patrick's mission.
How do you pronounce Declan?
Declan is pronounced DEK-lin, with 2 syllables.
Is Declan a boy name, girl name, or unisex?
Declan is most commonly used as a boy name in its Irish naming tradition, though usage can vary by region and generation.