The Collaborative International Dictionary of English v.0.48:

Muggletonian \Mug`gle*to"ni*an\, n. (Eccl. Hist.)
   One of an extinct sect, named after Ludovic Muggleton, an
   English journeyman tailor, who (about 1657) claimed to be
   inspired. --Eadie.
   [1913 Webster]