Jail, mental hospitals and substance abuse: Inside Ryan O'Neal's tragic personal and family life - including the the time he tried to hit on his OWN daughter and shot a gun at his son

It was Ryan O'Neal's charisma and good looks that convinced the Paramount executives to hire him, against their instincts, for the role in Love Story. The film would become a decade-defining smash hit, earning O'Neal an Oscar nomination and cashing in as the highest-grossing movie of 1970.

But it was his fiery temper, drug and alcohol addiction, tempestuous love life and headline-grabbing family that kept him in the public eye.

O'Neal, who died on Friday at the age of 82, was as famed for his personal life as his films - particularly his relationship with Farrah Fawcett.

The father of four admitted that he once tried to hit on his daughter Tatum, not realizing who she was.

He was arrested after firing a gun at his son Griffin, who had his own lengthy history of arrests, and was charged with negligence after a boating accident that killed Francis Ford Coppola's son Gian-Carlo.

O'Neal was arrested again after police found him and his youngest son Redmond taking methamphetamine at the actor's Malibu home in 2008. Redmond, too, has a complicated and sad story, and is currently in the Patton State Psychiatric Hospital in San Bernardino.

His son Patrick is the only one of the three to emerge unscathed: Patrick is an actor and sportscaster, and was the one who announced his father's death.

O'Neal's last major role was with his daughter in a 2011 reality show, 'Ryan and Tatum: The O'Neals,' on Oprah Winfrey's cable channel, OWN. She starred alongside her father in Paper Moon and won an Oscar at the age of ten for Best Supporting Actress - making her the youngest person ever to win an Academy Award.

But the pair had become estranged, with Tatum accusing her father of physical and emotional abuse, and severing contact for 25 years.

The Oprah series left the impression that the two had ended their long estrangement, he later said it was not true.

'We're further apart now than we were when we started the show,' he said.

EARLY YEARS 

O'Neal was born in Los Angeles, his father a screenwriter and his mother an actress.

At the age of 17 he joined his globetrotting parents in Germany, and landed his first role: a stunt man on the television series Tales of the Vikings.

He returned to LA, and at 18 landed his first stint in jail - 51 days, after a brawl at a New Year's Eve party.

O'Neal became a TV actor, and was seeking to break into Hollywood at a time when executives very much looked down on television.

He played the wealthy man about town, Rodney Harrington, for five years on the prime-time soap opera Peyton Place before Ali MacGraw - who had won Best Newcomer at the Golden Globes the year before - lobbied for his casting alongside her in a new film.

'Jon Voight turned the part down. Beau Bridges was supposed to do it,' he told a reporter in 1971. 'When my name came up through Ali, they all said 'No.'

'Ali said, 'Please meet him.'

That film, Love Story, sent both their careers stratospheric.

At the age of 29, he became a household name, and was honored with the only Oscar nomination of his career. He lost to George C. Scott, winning with the war epic Patton.

But O'Neal's film, co-starring MacGraw, was the highest grossing of the year.

And throughout the 1970s O'Neal would remain one of the biggest movie stars of the decade - his relationship with Farah Fawcett cementing his status.

O'Neal's first marriage was to Joanna Moore, which lasted from 1963 to 1967 - eventually ending due to his infidelity, and her alcoholism. They had two children: Tatum and Griffin. 

O'Neal would later say: 'I got married at 21, and I was not a real mature 21. 

'My first child was born when I was 22. 

'I was a man's man; I didn't discover women until I was married, and then it was too late.'