Possible Clues:

• Too trusting
• Revolutionary got married at end of mutiny, witnessed by one of those emotional, nostalgic types
• End of Happy Valley coming first, indeed sentimental
• With childlike credulity
• Action taken about Welsh river estuary ultimately is naive
• Wet behind the ears -- and in front of them
• Naive revolutionary married unknown seer and died
• Revolutionary got married at end of mutiny, witnessed by emotional, nostalgic type
• Wet end to mutiny witnessed by one of those emotional nostalgic types
• Tearful