Name-day listings carry National Owen Day on 9 February, and on that date in 2025 the Welsh newsroom WalesOnline posted about the day unprompted. A full-text search of the Federal Register returns nothing for the name. No founder, organisation, proclamation or trademark could be located, and no source explains the date.
Nobody can agree on what it means
Most name pages will tell you Owen comes from the Latin Eugenius and means well-born. The onomastic reference Behind the Name is more careful. It says the Old Welsh form was possibly from Eugenius, offers Celtic roots meaning sheep, good or desire, and files the entry under uncertain etymology.
The scholarship is sharper still. Jackson proposed the Latin route in 1953, and Pedersen and Lewis later judged it phonologically impossible. So the name is old, Welsh, and undefined.


