Origin of name Keller

It is of German origin and means (cellar) or (basement)- when I, opened my eyes, I realized, Love came to me... only THIS TIME FOR REAL!) A good musical pun. donot confuse with the alleged comedic (basement of blood) poking fun at the St.Petersburg massacre- part of a musical-comedy act take off on the Romanov sisters and working in night clubs around l96l, at the height of the Cold War/