>Any chance of a painting or drawing of this Irish King in history
>books in the UK?
No chance of a genuine one, since Cormac Mac Art almost certainly
never existed. Genuine Irish written history starts in the fifth
century. The alleged "history" of the Milesian monarchs of Ireland
(including Cormac Mac Art) is a later fabrication. "Irish Kings and
High-Kings", by Francis John Byrne, is a good reference for early
Irish history.
Stewart Baldwin