Count of Vaudémont explained

The title Count of Vaudémont was granted to Gérard 1st of Vaudémont in 1070, after he supported the succession of his brother, Theodoric II, Duke of Lorraine to the Duchy of Lorraine. Counts of Vaudémont served as vassals of the Dukes of Lorraine. After 1473 the title was held by the Duke of Lorraine and was bestowed on younger sons of the Duke. It was later restyled "Prince of Vaudémont".

House of Alsace

Henri IV Vaudémont (1310–1346), son of previous count, became de facto count in his father's later years, but died before him, killed at the Battle of Crecy.

House of Joinville

House of Lorraine-Vaudémont

After this the title Count of Vaudémont was attached to the Duchy of Lorraine and was given to cadet members of the family:

References

Michel François, Histoire des comtes et du comté de Vaudémont des origines à 1473, Nancy, Imprimeries A. Humblot et Cie, 1935, 459