Who was the best man John and Yoko's wedding?

In 1962 Brian Epstein was the best man hastily arranged wedding of John Lennon and Cynthia Powell in Liverpool. Just under five years later John married again - at even shorter notice. 

With Brian sadly departed, he turned to another business associate. Peter Brown, the Beatles 'Mr Fixit'. Brown arranged the wedding in Gibraltar, and was John's best man. 

This earned him a shout-out in 'The Ballad of John and Yoko"

Peter Brown called to say/“You can make it O.K.
You can get married in Gibraltar near Spain

John, Yoko and the Monkeys - story of the wedding (4 min read)

The Complete Beatles Weddings - free download