Margaret of Holland (d. 1356)
Margaret of Holland (d. 1356)
Countess of Hainault and Holland . Died in 1356; daughter of William III the Good, count of Holland and Hainault, and Jeanne of Valois (c. 1294–1342, sister of Philip VI, king of France); sister of Philippa of Hainault (1314–1369) and Joan of Hainault (c. 1310–?); became second wife of Louis III, duke of Bavaria (r. 1294–1347), king of the Romans (r. 1314–1328), also known as Ludwig IV of Bavaria or Louis IV, Holy Roman emperor (r. 1314–1347); children: Louis the Roman, also known as Louis the Younger (1330–1365), elector of Brandenburg (r. 1350–1365); William V, duke of Bavaria (r. 1347–1358), count of Holland (r. 1354–1358), count of Hainault (r. 1356–1358); Albert I, count of Holland (r. 1353–1404); Otto V (1341–1379), elector of Brandenburg (r. 1365–1373). Louis IV's first wife was Beatrice of Silesia .