8:15 AM PT -- Sources tell us Hilton allegedly first went to the home of E.G.'s ex husband Rick Salomon -- the father of Hunter -- and stole his Bentley. You may see a connection here ... Conrad's sister, Paris, starred in her famous sex tape with Salomon ... and Conrad ended up dating his daughter.
The troubled 23-year-old brother of Paris allegedly violated a restraining order by going near the house at 4 AM in the Hollywood Hills. He's currently in custody.
From what we can gather, Conrad was trying to make contact with Hunter Daily Salomon, E.G.'s daughter. Conrad and Hunter were once together but broke up and she got a restraining order against him, but he broke into her home a month later in June 2015. According to cops, he tried again this morning.
Hilton has had a slew of problems with the law, including going nuts on a plane and assaulting a flight attendant, DUI and probation violations.