Ludwig II, sometimes called the Swan King or the Fairy Tales King, was King of Bavaria from 1864 until his death in 1886. His true interests were art, music and architecture. One of the first things he did in his reign was to summon Wagner to his court. The Swan that appears in the clip is key in the history of Ludwig II. The Opera «Lohengrin» by Wagner deals with Lohengrin, the Swan Knight, who saved a beautiful girl named Elsa (the daughter of the Duke of Brabant) and her brother in a boat pulled by a swan. It was the first opera that Ludwig II saw and fell in love with the swan motive. The piece includes a round cut ruby on the ring.