incomer

from The Collaborative International Dictionary of English v.0.48

Incomer \In"com`er\, n.
   1. One who comes in.
      [1913 Webster]

            Outgoers and incomers.                --Lew Wallace.
      [1913 Webster]

   2. One who succeeds another, as a tenant of land, houses,
      etc. [Eng.]
      [1913 Webster]