Noun
The principles of those within the Roman Catholic Church who maintain extreme views favoring the pope's supremacy; -- so used by those living north of the Alps in reference to the Italians; -- rarely used in an opposite sense, as referring to the views of those living north of the Alps and opposed to the papal claims. Cf. Gallicanism.
Source: Webster's dictionaryHowever, subsidiarity involves the distribution of authority in structures outside of the Church's clergy and thus does not contradict Ultramontanism. Source: Internet
Challenges to Ultramontanism have remained strong within and outside of Roman jurisdiction. Source: Internet
Other Christian groups outside the Catholic Church declared this as the triumph of what they termed "the heresy of Ultramontanism". Source: Internet