Robin Hugh Gibb was born on 22 December 1949 in Jane Crookall Maternity Home in Douglas, Isle of Man, to Barbara Gibb (née Pass) and Hugh Gibb.
He was the fraternal twin of Maurice Gibb and was the older of the two by 35 minutes.
Apart from Maurice, he had one sister, Lesley Evans, and two brothers, Barry and Andy.
As children in Manchester, Gibb and his brothers began committing crimes such as petty burglary and arson.

Their neighbour in Willaston, Isle of Man, Marie Beck, was a friend of his mother and her sister Peggy.
Helen Kenney, another neighbor, was living in Douglas Head.
As Kenney recalls, "Barry and the twins used to come into Mrs Beck's house and we would talk to them.
Robin once said to me, 'We're going to be rich one day, we're going to form a band!'
Little did I realise he meant it."
Robin Hugh Gibb was born on 22 December 1949 in Jane Crookall Maternity Home in Douglas, Isle of Man, to Barbara Gibb (née Pass) and Hugh Gibb. He was the fraternal twin of Maurice Gibb and was the older of the two by 35 minutes. Apart from Maurice, he had one sister, Lesley Evans, and two brothers, Barry and Andy. As children in Manchester, Gibb and his brothers began committing crimes such as petty burglary and arson.
Their neighbour in Willaston, Isle of Man, Marie Beck, was a friend of his mother and her sister Peggy. Helen Kenney, another neighbor, was living in Douglas Head. As Kenney recalls, "Barry and the twins used to come into Mrs Beck's house and we would talk to them. Robin once said to me, 'We're going to be rich one day, we're going to form a band!' Little did I realise he meant it."
Robin Gibb