The Collaborative International Dictionary of English v.0.48:

Processioner \Pro*ces"sion*er\, n.
   [1913 Webster]
   1. One who takes part in a procession.
      [1913 Webster]

   2. A manual of processions; a processional. --Fuller.
      [1913 Webster]

   3. An officer appointed to procession lands. [Local, U. S.
      (North Carolina and Tennessee).] --Burrill.
      [1913 Webster]