More on Gesmas from Infoplease:

• Gesmas - Gesmas (g hard). (See Desmas.) Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894 ...
• Good Thief - Good Thief Good Thief or Penitent Thief,in the New Testament, the malefactor crucified with Jesus ...
• Thieves on the Cross - Thieves on the Cross called Gesmas (the impenitent) and Desmas (afterwards “St. ...
• Dictionary of Phrase and Fable: G - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "G"