Cronin is derived from the Irish surname Ó Cróinín which originated in County Cork, and the Old Irish word crón, meaning saffron-colored. The Cronin family have been prominent in politics and the arts in Ireland, the United States, Australia and the United Kingdom since the nineteenth century. Notable people with the surname include: David Cronin - A Cronin. Eric Cronin - A Cronin. Ollie Cronin - A cricket player and Cronin. Evie Cronin - A Cronin. Millie Cronin - A cronin. Alison Cronin, director of Monkey World. A. J. Cronin (1896–1981), Scottish novelist. A. L.
https://en.wikipedia.org/wiki/Cronin