Ludwig
From Gineipaedia, the Legend of Galactic Heroes wiki
Crown Prince Ludwig was the son of Kaiser Friedrich IV, and presumably was next in line for the throne. However he was deceased by 796 UC (487 IC / 3596 CE). His son, Erwin Josef II, would become the 37th Kaiser of the Galactic Empire's Goldenbaum Dynasty. (LOGH: 'New Trends')
