Surprising payment lawsuit is alleging Riley Keough received from John Travolta to help birth Elvis' great-grandson

A lawsuit has made a shocking and unsubstantiated claim about a payment sent to Riley Keough by John Travolta.

In the suit, it is claimed that Travolta had paid Keough for an egg donation in order for he and his wife Kelly Preston to have a child. If this had been the case, then that would make the couple's child Benjamin the biological great-grandson of Elvis Presley.

Priscilla Presley, Keough's grandmother and the late Elvis's ex-wife, has responded to the shocking claim in the lawsuit with utter fury, slamming the suit as 'outrageous' in a statement released by her attorneys.

Lawyers representing Priscilla said: "Brigitte Kruse, Kevin Fialko, and their co-conspirators have demonstrated that there is no bar too low, no ethical line that they are unwilling to cross in an effort to cause further pain to Priscilla Presley and her family."

Riley Keough has been named in the suit (Michael Loccisano/Getty Images)

They added: "These recent outrageous allegations have absolutely nothing to do with the claims in this case", and said that these allegations 'absolutely will be addressed in court'.

The suit was brought by Brigitte Kruse, a former associate of Priscilla Presley, over a financial dispute.

It alleges that Kruse was told by Michael Lockwood that Travolta had paid Keough around $20,000 and an old Jaguar car for her to provide eggs to him and his wife.

The document alleged: "Michael Lockwood, [Keough's mother] Lisa Marie’s ex-husband, and the father of Harper and Finley Lockwood approached Plaintiff Kruse, telling her that John Travolta’s wife, Kelly Preston, had been unable to bear her own children, and Travolta and Presley previously used Lisa Marie’s eggs to get pregnant."

The suit also claimed that Lockwood said that the Grease star said he decided he didn't want to use eggs donated by Lisa Marie because they didn't want 'eggs with heroin on them'.

Priscilla Presley responded furiously to the suit (BG048/Bauer-Griffin/GC Images)

So instead they 'orchestrated a deal, where Riley Keough gave her eggs to Travolta, so that Kelly could give birth to their son, Ben Travolta'.

For his part, Lockwood has denied having said this when approached by the Daily Mail, telling the outlet: "That just sounds crazy. I have not heard anything about it."

Travolta and Preston welcomed their son Benjamin in 2010 only a year after their son Jett Travolta passed away following a seizure aged just 16.

The pair called Benjamin a 'miracle', with the Pulp Fiction star telling People in 2011: “He's given the house a renewed spirit and a purpose."

UNILAD has previously approached Travolta and Keough's representatives for comment.