If I Were Queen on AllMovie

This mythical kingdom romance was quite a bit lighter than most of Ethel Clayton's heavily dramatic vehicles. While studying in Paris, Princess Oluf of Kosnia (Andree LeJon) befriends an American girl, Ruth Townley (Clayton), and gives her a locket bearing her name and the royal coat of arms. When Ruth accidentally drops the locket off a balcony, it is returned by a handsome stranger. Back home in Kosnia, Oluf wants to get married, but her choice of mate is challenged by Valdemir, the ruler of a neighboring principality (Warner Baxter). Ruth goes to visit Oluf, but the train wrecks en route and she is rescued by Valdemir, who turns out to be the man who fetched her locket. Since he believes that Ruth is Oluf, he keeps her confined at his castle. In spite of the circumstances, Ruth falls in love with Valdemir, and he plans a royal wedding. Ruth, however, refuses to go along with this, and eventually he discovers the truth. Oluf is allowed to marry the man she loves, and Ruth makes up with Valdemir.