Keeping The Castle: Crom Castle in Northern Ireland has been the ancestral seat of the Crichton family for more than 400 years. John, Viscount Crichton, will one day inherit the estate from his father, Lord Erne. This docuseries follows John as he juggles his busy life in London with his responsibilities at Crom, from hosting weddings to providing the location for a TV show, all to keep the finances afloat.