1275–1322*), ruled alone in Bergedorf-Mölln, rivalled as Saxon Prince-Elector by his cousin Rudolph I of Saxe-Wittenberg in 1314 1322–43: Albrecht (Albert) IV (*?–1343*), son of the preceding. 1343–56: John III (*?–1356*), son of the preceding. 1356–70: Albrecht (Albert) V (*?–1370*), brother of the preceding. 1370–1401: Eric III (*?–1401*), brother of the preceding. In 1401, the elder branch became extinct and Lauenburg rejoined the Ratzeburg-Lauenburg line. Ratzeburg-Lauenburg line First named Saxe-Bergedorf-Lauenburg, however, renamed following a territorial redeployment after inheriting Albert III's share. 1303–38: Eric I (*?–1360*), resigned in 1338. 1338–68: Eric II (*1318/1320–1368*), son of the preceding. 1368–1412: Eric IV (*1354–1411/1412*), son of the preceding, ruled jointly with his sons Eric V and Bernard II since 1401. In 1401, the younger branch inherited Lauenburg and other possessions of the extinct elder Bergedorf-Mölln line. 1401–36: Eric V (*?-1436*), son of the preceding, ruled jointly with his father until 1412, his brother John IV until 1414 and his younger brother Bernard II as of 1426. 1401–14: John IV (*?-1414*), brother of the preceding, ruled jointly with his father until 1412 and his brother Eric V. 1426–63: Bernard II (*1385/1392–1463*), brother of the preceding, ruled jointly with his brother Eric V as of 1426. 1463–1507: John V (*1439–1507*), son of the preceding. 1507–43: Magnus I (*1488–1543*), son of the preceding. 1543–71: Francis I (*1510–1581*), son of the preceding, resigned in favour of his son Magnus II. 1571-74: Magnus II (*1543–1603*), son of the preceding. 1574–81: Francis I (*1510–1581*), reascended the throne, replacing his son Magnus II. 1581-88: Magnus II (*1543–1603*), son of the preceding, ruled jointly with his brothers Maurice and Francis II, Magnus resigned in 1588. 1581-1612: Maurice (*1551–1612*), ruled jointly with his brothers Magnus II (till 1588) and Francis II. 1581–1619: Francis II (*1547–1619*), ruled jointly with his brothers Magnus II (till 1588) and Maurice (till 1612). 1619–56: Augustus (*1577–1656*), son of the preceding. 1656–65: Julius Henry (*1586–1665*), brother of the preceding. 1665–66: Francis Erdmann (*1629–1666*), son of the preceding. 1666–89: Julius Francis (*1641–1689*), brother of the preceding. House of Welf (1689–1803) For 113 years the duchy was ruled by members of the Welf dynasty. However, since its violent takeover only in 1728 Emperor Charles VI enfeoffed George II Augustus with Saxe-Lauenburg, finally legitimising the Welfs as dukes. House of Brunswick and Lunenburg–Celle (1689–1705) 1689–1705: George William; also Prince of Brunswick and Lunenburg (Celle), by title also Duke of Brunswick and Lunenburg.