Claim: Mollie Hunter's debut Patrick Kentigern Keenan was published in 1963, and a U.S. version was published the same year under a different title.
Evidence: Hunter's debut was Patrick Kentigern Keenan, published by Blackie and Son in 1963 with illustrations by Charles Keeping. In the U.S. it was published in 1963 as The Smartest Man in Ireland.