Related Clues:

• Originally, Dickens's Barnaby was a menial
• One's bound to be somewhat user-friendly
• Academic type pulls up
• Hard worker a bit upset the time after Christmas
• Menial servant of duke, character in Dickens
• Hack - slave
• Villein
• Excessively studious pupil
• Overly studious pupil
• Cram for exam
• Medieval person bound to a feudal lord
• Menial servant
• Dogsbody
• Hard-working, trustworthy person (but, of a horse, untrustworthy!)
• Hard grafter (from an ancient city?)