Declen is a warm, spirited twist on the ancient Irish name Declán, which traces back to a 5th-century saint who lit Munster’s green hills with prayer and kindness. Pronounced DEK-lin (/ˈdɛklɪn/), it was later penned by Latin scribes as Declanus, giving it a dash of classical flair. The name means “full of goodness,” and today about ten baby boys carry its spark in the USA each year, quietly carving out a spot among the top thousand. Simple and strong, it dances off the tongue like a bright morning breeze, ready to inspire courage, compassion—and just the right amount of playful mischief.