Possible Clues:

• Feudal tenant
• Criminal swapping one key for another — one's bound to work
• Old countryman sick, having broken blood vessel
• Peasant's home south of foreign town
• Person bound to feudal lord
• Subject: problem in the bloody tube
• One sounds wicked enough for the surf, by the sound of it
• Raising Union Jack about start of procession
• Feudal peasant