ROME -- A Rome villa containing the only known ceiling painted by Caravaggio is set to go on a court-ordered auction block Tuesday, thanks to an inheritance dispute pitting the heirs of one of the Italian capital's aristocratic families against their step-mother, a Texas-born princess.Princess Rita Jenrett Boncompagni Ludovisi, formerly known as Rita Carpenter, woke up Tuesday morning in the Casa dell’Aurora surrounded by her dogs, as usual, on what might be the last day that her home of nearly two decades is actually hers.An online auction organized by the Rome tribunal is planned to start at 3 p.m. sharp.