Possible Clues:

• 'It's not coming to me'
• Head scratcher's words
• 'It's totally slipped my mind'
• Befuddled comment
• "It's not coming to me"
• Blacksmith's workplace
• "My memory fails me"
• 'My memory fails me'
• 'Hmm ... it's escaping me'
• 'Hmm, can't remember'