Yes the water color painting you guys are referring to was painted by Ronald K. Barrett Magus of Xem and second High Priest of the Temple of Set, and was presented to the Aquino's as a gift. According to the many articles I've read and inner-ToS sources, Barrett succumbed to the Curse of the Magus. As 1137 pointed out, Barrett as High Priest ruled the Temple with an iron claw, and he eventually succumbed to his own "Id monster".
Leading to Barrett's downfall a I* Setian was living with him and reported to some members of the Council of Nine that Barrett was saying that his Word of Xem must overthrow Xeper and for this to happen the Magus of Xeper Michael Aquino must be "sacrificed". This accusation was found to be true and Barrett was expelled from the ToS along with several of his followers. And apparently some years later Barrett died under mysterious circumstances. "Woe be to the false priest."