What does Herman mean?
From Germanic 'heri' (army) and 'man' (man), giving 'man of the army, soldier'. The Latinized Arminius refers to the same Cheruscan war-leader.
What does Rudolph mean?
From the Germanic name Hrodwulf, combining 'hrod' ('fame') and 'wulf' ('wolf'), hence 'famous wolf'. The '-olph/-olf' ending preserves the wolf element.