Possible Clues:

• Surname of Judas
• Resident of the lowest circle of hell, in Dante's 'Inferno'
• Judas's surname
• See 7 Across
• Judas --
• By leaving bay, disturbance is caused by traitor
• Traitor steals horse from one's carriage
• Judas . . . . . . . ., traitor
• Juda's surname