Mia Farrow's son Ronan Farrow responds to rumor that Frank Sinatra is his father

Ronan Farrow and his mother, actress Mia Farrow,

Ronan Farrow and his mother, actress Mia Farrow, attend the Greater Talent Network 30th anniversary party at the United Nations in New York City. (May 2, 2012) (Credit: Getty Images)

Attorney Ronan Farrow Wednesday responded lightheartedly to his mother Mia Farrow's acknowledgment that he may be Frank Sinatra's son rather than Woody Allen's.

"Listen," he tweeted, "we're all *possibly* Frank Sinatra's son."

In a new interview with Vanity Fair, actress Mia Farrow answered, "Possibly" when journalist Maureen Orth asked directly whether Ronan, considered Allen and Farrow's biological son, was actually Sinatra's, as long rumored.

The magazine noted no DNA tests have been done. In an email to Orth, Sinatra's daughter, Nancy Sinatra, said only that Ronan, 25, "is a big part of us, and we are blessed to have him in our lives."

A representative for Allen told The Associated Press, "The article is so fictitious and extravagantly absurd that he is not going to comment."

Mia Farrow, who was married to Sinatra for 18 months from 1966 to 1968, told the magazine that the singer was the great love of her life and that, "We never really split up." Sinatra would have been 71 when Ronan was conceived.

Ronan is a graduate of Yale Law School and a Rhodes scholar who became a journalist, human-rights activist and a special adviser to the secretary of state. The Hollywood Reporter said Wednesday that MSNBC was considering him to host a new weekend show. He is one of Mia Farrow's 14 adopted and biological children.

The "Rosemary's Baby" star was in a relationship with Allen from 1980 to 1992. They broke up when Farrow learned Allen and her adopted daughter from a previous marriage, Soon-Yi Previn, had entered a romantic relationship. Allen and Previn later married.

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