TheBoost said:

Han Solo... Han isn't far from Hans, a real name, and Solo isn't usually a name but a recognizable word.

I've always thought of "Solo" being a nickname Han uses. As in ray afraid. Afraid obviously isn't my real last name, but for the most part I do go by that in the real world. I thought Han probably used it because in his line of work you wouldn't want to be known by your legal name.

I realize than in the EU it's established as his real name, but not in my world.