guy (1) Look up guy at Dictionary.com
"rope, chain, wire," c.1350, "leader," from O.Fr. guie "a guide," from guier (see guide); or from a similar word in North Sea Gmc. The "rope" sense is nautical, first recorded 1623.
guy (2) Look up guy at Dictionary.com
"fellow," 1847, originally Amer.Eng.; earlier (1836) "grotesquely or poorly dressed person," originally (1806) "effigy of Guy Fawkes," leader of the Gunpowder Plot to blow up British king and Parliament (Nov. 5, 1605), paraded through the streets by children on the anniversary of the conspiracy. The male proper name is from Fr., related to It. Guido, lit. "leader," of Gmc. origin (see guide).