The Collaborative International Dictionary of English v.0.48:

Archchamberlain \Arch`cham"ber*lain\, n. [Cf. G.
   erzk[aum]mmerer. See Arch-, pref.]
   A chief chamberlain; -- an officer of the old German empire,
   whose office was similar to that of the great chamberlain in
   England.
   [1913 Webster]