Elsa is a character from the opera Lohengrin, composed by Richard Wagner. She is the daughter of the King of Brabant and is betrothed to Lohengrin, a knight of the Holy Grail. Elsa is portrayed as a beautiful and innocent woman who is devoted to her beloved Lohengrin. She is also known for her naivety and trusting nature, which leads her to ask Lohengrin his name and origin, a question that he is forbidden to answer.