The true Catholic Church (tCC) is a Roman Catholic conclavist group with a claimed membership of around 90 families worldwide. It regards the Roman Catholic Church as an apostate, un-Catholic organisation, and claims that it is the true and legitimate Catholic Church founded by Christ (the word 'true', with a lower-case 't', is used in its title solely to distinguish it from the mainstream Roman Catholic Church). Roman Catholics regard it as a schism sect. The tCC's leader, Fr. Lucian Pulvermacher, resides in the United States, in Springdale, Washington. He claims the title of 'Pope Pius XIII': the tCC's members believe that the papacy was vacant between the death of Pope Pius XII in 1958 and their election of Fr. Pulvermacher as pope in October 1998.