One man was a mere 20-year-old, a musician and composer of modest origins. The other, at 60, was one of the most celebrated writers of his time. Yet it’s not surprising that young Arthur Sullivan could count Charles Dickens as a friend. Sullivan has been called a “born courtier,” so charming and delightful to be with that he could make friends with anyone. And his friendships with influential people over the years boosted his career amazingly – from his violin-playing friend Alfred, Duke of Edinburgh, to the composer Rossini, to famous soprano Jenny Lind (the Swedish Nightingale). Even Queen Victoria admired him; she conferred a knighthood upon him in 1883…