Elizabeth Swann is the daughter of Governor Weatherby Swann and Lady Elizabeth Swann. She first appears in The Curse of the Black Pearl when she is eleven years old and about to be married off to a man she does not love. However, her life changes forever when Captain Jack Sparrow arrives in town and kidnaps her. She eventually falls in love with Will Turner and becomes his wife.
In Dead Man's Chest, Elizabeth is captured by Davy Jones and taken aboard the Flying Dutchman. Will Turner rescues her, but in doing so, he is forced to serve onboard the Dutchman for ten years. Elizabeth returns to land and becomes engaged to James Norrington, but she cannot forget about Will Turner.
At the beginning of At World's End, Elizabeth sets out to rescue Will Turner from Davy Jones' Locker. She assembles a crew including Jack Sparrow and Barbossa, who are both undead at this point. They succeed in rescuing Will Turner, but they are all captured by Beckett and sent to execution. However, they escape and defeat Beckett's armada before finally defeating Davy Jones once and for all.
Elizabeth Swann is one of the most badass characters in Pirates of the Caribbean. She goes through a lot of trials and tribulations, but she always comes out on top in the end.