<page_title> List of rulers of Bavaria </page_title> <section_title> Table of rulers </section_title> <table> <cell> William IV the Steadfast <col_header> Ruler </col_header> </cell> <cell> 13 November 1493 <col_header> Born </col_header> </cell> <cell> 1508-1550 <col_header> Reign </col_header> </cell> <cell> 7 March 1550 <col_header> Death </col_header> </cell> <cell> Sons of Albert IV, the last Bavarian pair of brothers ruling together. <col_header> Notes </col_header> </cell> <cell> Louis X <col_header> Ruler </col_header> </cell> <cell> 18 September 1495 <col_header> Born </col_header> </cell> <cell> 1516-1545 <col_header> Reign </col_header> </cell> </table>
William IV (13 November 1493 – 7 March 1550) was duke of Bavaria from 1508 to 1550, where until 1545 he was together with his younger brother Louis X, Duke of Bavaria.