Ah here.

Niall McCormack tweetz:

Santa goes rogue on this super book cover [translated: Christmas Adventure] by Máirtín de Fuireastail. Published by Foilseacháin Náisiúnta Teoranta [FNT}. in 1960. De Fuireastail created a handful of lively covers for FNT in the early sixties but I can find no further details of this elusive artist…

Anyone?