Possible Clues:

• Workman whose key is concealed behind his coat?
• Tends to smooth things over for someone on site
• Worker who renders walls
• One of those, of course, hitting a brick wall covering up the divisions in The House
• Hang on in for each queen, the person decorating
• Pair covering terminal before making wall smoother?
• Tradesperson to re-staple faulty end of spear
• Smoothed out The Wall off site
• Art repels crude artisan
• Trowel-wielding artisan