Source : Webster's Revised Unabridged Dictionary (1913)

Uckewallist \Uck`e*wal"list\, n. (Eccl. Hist.)
   One of a sect of rigid Anabaptists, which originated in 1637,
   and whose tenets were essentially the same as those of the
   Mennonists. In addition, however, they held that Judas and
   the murderers of Christ were saved. So called from the
   founder of the sect, Ucke Wallis, a native of Friesland.
   --Eadie.