The Collaborative International Dictionary of English v.0.48:

Rascallion \Ras*cal"lion\ (r[a^]s*k[a^]l"y[u^]n), n. [From
   Rascal]
   A low, mean wretch; a rogue; same as rascal, n.. 2; now
   disused, replaced by rapscalion. [archaic] [Written also
   rascalion.]
   [1913 Webster]