When did Otto V, Duke of Bavaria's father become the King of the Romans?
Louis IV, Holy Roman Emperor Louis IV (German: "Ludwig" ; 1 April 1282 – 11 October 1347), called the Bavarian, of the house of Wittelsbach, was King of the Romans from 1314, King of Italy from 1327, and Holy Roman Emperor from 1328.
Philipp Albrecht, Duke of Württemberg Philipp Albrecht, Duke of Württemberg ("George Philipp Albrecht Carl Maria Joseph Ludwig Hubertus Stanislaus Leopold Herzog von Württemberg", 14 November 1893 in Stuttgart – 17 April 1975 in Ravensburg) was the son of Albrecht, Duke of Württemberg, and Archduchess Margarete Sophie of Austria. He became head of the formerly reigning royal House of Württemberg on the death of his father in 1939.