Short answers, pulled from the story.
John Joseph Nicholson was born on the 22nd of April 1937 in Neptune City, New Jersey. He lived under a different name and family tree for the first thirty-seven years of his life while his mother posed as his older sister.
The identity of Jack Nicholson's biological father remains unsolved. Biographers suggest June's manager Eddie King or her husband Donald Furcillo could be the father, but Nicholson never confirmed the identity.
Easy Rider in 1969 served as Jack Nicholson's true breakthrough. The film cost $400,000 to make but grossed $60 million and transformed him from a struggling actor into an overnight hero.
Jack Nicholson won three Academy Awards for his performances in One Flew Over the Cuckoo's Nest in 1975, Terms of Endearment in 1983, and As Good as It Gets in 1997. He holds the record for the most nominated male actor in Academy Awards history with 12 nominations.
Jack Nicholson lived under a different name and family tree until 1974 when Time magazine researchers revealed the truth. His mother June Frances Nicholson was only seventeen when he was born and her parents raised him as their grandson while she posed as his older sister.
Jack Nicholson took a break from acting after his final film role in 2010 with How Do You Know. He stated that he was now less driven to be out there anymore following the film's financial and critical failure.