Here's a really good riddle I came across once. It's really easy to find the answer if you know how to use google, but I would reccommend you actually tried to solve it. It took me a while to figure it out, but I really love this riddle. Comment your guesses. The answer fits ALL of the clues, and it's the kind of answer you'd go OHHHHH as soon as you figure it out. The answer is two names, and is Harry Potter related.
A married leader and a single slave
The toothless elder now gone to his grave
The death for which the younger took the blame
Committed by the one he could not name
They've ten between them, ten that do not see
Now name the leader and his enemy.
James Potter and Snape?
That's not the answer, try again :)
Aragog and the Basilisk.
I actually knew that one from before
Good :) When you were first introduced to it did you succeed in solving it yourself?
Yeah, one of the things reading Harry Potter fourteen times really helps with is riddles like this.