It would be impossible to invent Don Roberto today - a fantastic combination of Don Quixote and Sir Gawain, Indiana Jones and the Lone Ranger. He was so multi-faceted, so complex, that every chapter in his story reveals some new and contradictory aspect of his personality. He is best known as the co-founder, with Keir Hardie, of the Scottish Labour Party, and later as the founding president of the Scottish National Party. But in a long and extraordinary life he was many other things besides.