There are multiple origins and meanings for the name Egan:
1. Comes from the Old English word agen significance - "one's own; possessed by"
2. Irish name, derived from the root aedh etymology - "little fire"
3. Derived from the Gaelic (og) and translates as - "young"
4. Derivative of the name Iohannes/Yochanan means - "God (Ya/Jehovah) is merciful (Hanan)".