Sir Ivan Wilzig bans accused rapists Oren and Alon Alexander from his parties at Hamptons ‘castle’

Sir Ivan Wilzig — the eccentric owner of a castle in the Hamptons where real estate millionaires Oren and Alon Alexander have been accused in a lawsuit of raping a woman — is extremely “unhappy” at being associated in the mess over the twins’ alleged illegal activities. 

A source tells us that Wilzig held a BBQ at his medieval Water Mill estate — known for holding wild bacchanals — this past weekend where he bristled when guests brought up the twins. 

“Ivan didn’t want to discuss it,” says a source. “He is so unhappy with the situation. The Alexander brothers have been banned from his parties.” 

A source previously told Page Six that the Alexanders were regulars at Wilzig’s mansion, dubbed “the Playboy Mansion of the East Coast,” for years and that they stayed in their own room.

The highflying twins, who are well-known in certain social circles in NYC, Miami and the Hamptons, have been accused of rape in three lawsuits.

Their other brother Tal was also named in the latest suit filed on Tuesday.

According to a lawsuit filed by Kate Whiteman, she was allegedly dragged by Alon into a black SUV after leaving a club to find Oren waiting in the car.

They then allegedly took her to Wilzig’s campy castle where when she tried to escape, and a security guard working for Wilzig allegedly “dragged her back into the garage.” 

Wilzig is being named in the suit for negligence. 

“Plaintiff was ultimately forced to strip and change into a sarong. Her phone and other belongings were placed into a locker that was immediately locked by Oren, who then put the key around his wrist. The twins then led Plaintiff upstairs to what appeared to be a large bedroom,” ​and attacked her, the complaint ​further states. 

Ivan did not return a request comment.

We are told Tal was also spotted at the faux castle.

Wilzig’s brother Alan said in a previous interview of the parties, “A lot is hype. People will sensationalize. You come over and two girls are tanning topless and, if someone wants to be an idiot about it, they say everyone is running around naked.”

However, he also revealed, “Back in the early 2000s, I’d get up in the middle of the night… and there was always someone naked in the pool. But not in a bad way. Look, we don’t sit home and knit.”

He also had said that the dungeon, which has been photographed, is for the castle décor, and, “It’s a strict rule that nobody ever screws in that room.”

Another source tells us that Wilzig has everyone sign NDAs to attend his orgies. 

The Alexander brothers have also been accused of attacking Rebecca Mandel in 2010 when she was just 18, drugging her at a Meatpacking District club by allegedly spiking her drink before taking her home to rape her, another lawsuit claims. 

Lawyers for Oren and Alon have denied the claims.

In a lawsuit filed this week, Angelica Parker claimed the twins Oren and Alon, along with older brother Tal, conspired to rape her in a “coordinated sexual assault” inside the brothers’ shared apartment in Manhattan shortly after she met them in the fall of 2012.

A spokesman for Tal called Parker’s lawsuit as a money-grab.  

Isabelle Kirshner, the lawyer representing Oren and Alon, told the New York Times, “We have reviewed the allegations contained in the complaint and deny them, as they are pure fiction.”

Almost 30 other women have come forward to make similar claims, according to the lawyer representing Whiteman and Mandel.