Frederick I, Count of Vaudémont
Frederick of Lorraine was a Count of Vaudémont.
He was the son of Duke John I of Lorraine and younger brother of Charles II. In 1393, Frederick married Margaret the heiress of Vaudémont and Joinville, and became Count of these lands in her right. He founded the House of Vaudémont, a junior branch of the House of Lorraine.
His children were:
Dynastic problems in the senior line caused his great-grandson René of Vaudémont to become Duke of Lorraine as René II in 1473.