Ryan – Irish Family History & Meaning 💚🇮🇪☘️ The surname Ryan comes from the Irish Ó Riain, meaning “descendant of Rian.” The name Rian is believed to mean “little king” or “illustrious,” reflecting a noble heritage. Originally rooted in Counties Tipperary and Limerick, the Ryan family was part of the powerful Dalcassian tribes of Munster. Over centuries, many Ryans emigrated during the Great Famine, carrying their name to the United States, Canada, and beyond. Today, the Ryan name is a proud