Possible Clues:

• Greg ____ Bethune
• Romanesque
• No sacks on him, by the sound of it - not really human, either
• Architectural style developed by soldiers in new castle, perhaps
• No sacks on this, by the sound of it, and no 24 across either
• Not native Irish - and not even human, either
• Not a Saxon - and not a man either
• Not Saxon - and not even human, either
• Not Celtic, and not human either
• A conquest, perhaps, and not a soldier to be found?