As a quasar, Ton 618 is believed to be the active galactic nucleus at the center of a galaxy, the engine of which is a supermassive black hole feeding on intensely hot gas and matter in an accretion disc. The light originating from the quasar is estimated to be 10.8 billion years old.
RA 12h 28m 25s | Dec +31° 28′ 38″TON 618/Coordinates
In the movie, Yondu broke the Ravasher's code regarding children. Ravangers are forbidden to deal with sale/trade/transport of children so when he began shuttling children to Ego he broke the code especially once he knew what Ego was doing to them. he trafficked in children… for star lords dad.
There isn't much about Dark wizards from these houses, but some notable examples from canon include: Ravenclaw: Quirinus Quirrell - The deceased Defense Against the Dark Arts teacher was a loyal follower of Voldemort and had hosted the Dark Lord in his body since he found him in Albania.