He very well could have been a forerunner of the Cynics, in part because of his strong, but playful, parrhesia. None of his works have survived.

They acknowledged no monastic superior, obeyed no definite rule, and disposed individually of the product of their manual labour.

I'm just now finding out about this guy. Wow. What an absolutely legendary mix of character, courage, talent, and despair. And unlike Peregrinus he didn't have to talk about it for four years to get his nerve up.

Recently came across this Stirner-influenced writer who wishes anarchist would do more living and less politics a la the Cynics.

"Hipparchia of Maroneia (fl. c. 325 BC) was a Cynic philosopher, and wife of Crates of Thebes. She was born in Maroneia, but her family moved to Athens, where Hipparchia came into contact with Crates, the most famous Cynic philosopher in Greece at that time. She fell in love with him, and, despite the disapproval of her parents, she married him. She went on to live a life of Cynic poverty on the streets of Athens with her husband."

This episode of Wisecrack's 8-Bit Philosophy tries to distinguish between haters and real cynics.

Chronological list of Cynic philosophers

Very handy collection of sources covering some of the lesser-known cynics.