Albert IV, Duke of Mecklenburg
Albert IV was duke of Mecklenburg from 1383 to 1388. He was the son of the Duke Henry III of Mecklenburg and Ingeborg of Denmark.
Albert was also a claimant to the Danish throne after the death of King Valdemar IV, but Olaf II succeeded instead.
After his father Henry died in 1383, Albert ruled Mecklenburg jointly with his uncles Albert III and Magnus I and his cousin John IV.
He was married to Elisabeth of Holstein, the daughter of Nicholas, Count of Holstein-Rendsburg and died in December 1388. In 1404 his widow Elisabeth married Duke Eric V of Saxe-Lauenburg.
