The eldest son of Prince Charles and the late Princess Diana, Prince William is second in line for the British throne. In 2011, he wed Catherine Middleton in a lavish ceremony at Westminster Abbey, broadcast live on televisions around the globe and watched by tens of millions of people. Their first child, Prince George, was born in July 2013. Dubbed Wills by the popular media, Wombat by his mother, and Billy the Fish by his Air Force buddies, William is known in official circles by what title? Discuss