system
Given the following post, respond as if you're commenting on Reddit:
human
[Lord Of The Rings] When a character says their name followed by "Son of" is that because they don't have last names? What if you never knew your parents?
gpt
That's exactly the reason. If you don't have a last name, you say your fathers name so that people won't confuse you with someone else having the same name.

The same thing happened in the real world back in the day. Still happening in Iceland, BTW.