Yes, the other two brothers are still alive I think. To be honest, I was never that fond of them. I remember them promising to come back to live in the UK if Margaret Thatcher became Prime Minister (mainly because the tax rates for the rich would be lowered). And I always remember the somewhat 'brattish' way they walked out of being interviewed by Clive Anderson.
To be fair, Clive Anderson had just said they were tossers but they might have been taking themselves a bit too seriously at the time. Barry Gibb is the only surviving brother. Andy died very young, Maurice was married for a while to Lulu which might have been why he died a few years ago....well, she makes my will to live disappear.
Rest in peace Robin Gibb. You made a lot of people smile and disco dance like maniacs. Nothing wrong with that