There is a chance that instead of getting the option to give him a coin, he will start ranting about how his wife and daughter were killed by brigands and that the same brigands burned down his house, putting him in the situation he currently is.
He also says that Edda is lucky, as she is insane and can't see the true face of reality. Sometimes, he will walk into the The Bee and Barb and start yelling at people about the hardships of his life, only to leave again. He sleeps in Beggar's Row at night.
Snilf is also one of the two beggars in Riften (the other being Edda) that can be used to charge the Ebony Blade obtained from the The Whispering Door quest. By using the Ritual Stone to revive both of them, they can be killed again for an additional kill towards the charging of the Ebony Blade.
- The Elder Scrolls V: Skyrim (First appearance)