Cian T. McMahonibute - Books collection

I'm sorry, but I don't have specific information on individuals unless they are widely recognized public figures and well-documented in sources up to my last training cut-off in October 2023. If Cian T. McMahon is a lesser-known figure or a private individual, I would not have information about him. However, if you provide more context or specify the information you're looking for, I would be glad to help as much as I can!