[look at both of them thinking zolf isn't a silly first name.......]

Some people don't have surnames where I'm from. I'm one of them! Others use them to designate a lineage; that's typical of nobles, at least.

[That's Surnames 101, you're welcome.]

One of the knights I worked with exclusively went by surname; I wouldn't have even known it wasn't his given name if I hadn't done my research on him before accepting his contract!

[That's not exactly how it went, but that's close enough.]