The term's origins are in ecclesiastical language from the Middle Ages: when a non-Italian was elected to the papacy, he was said to be papa ultramontano, that is, a pope from beyond the mountains (the Alps). Foreign students at medieval Italian universities were also referred to as ultramontani.
The word was revived but the meaning reversed after the Protestant Reformation in France, to indicate the "man beyond the mountains" located in Italy. In France, the name ultramontain was applied to people who supported papal authority in French affairs, as opposed to the Gallican and Jansenist factions of the indigenous French Catholic Church. The term was intended to be insulting, or at least to imply a lack of true patriotism. From the 17th century, ultramontanism became closely associated with the Jesuits.
In the 18th century the word passed to Austria (Josephinism and Febronianism), where it acquired a much wider significance, being applicable to all the conflicts between church and state, the supporters of the Church being called ultramontanes. In Great Britain and Ireland, it was a reaction to Cisalpinism, the stance of moderate lay Catholics who sought to make patriotic concessions to the Protestant state to achieve Catholic emancipation.
In Canada, the majority of Catholic clergy despised the French Revolution and its anti-clerical bias and looked to Rome for both spiritual and political guidance. There were many laymen and laywomen who supported these ideals as key to preserving Canadian institutions and values. For this reason they were called ultramontanists. The ultramontanes distrusted both the Protestant anglophone and francophone politicians, but the Church found it easier to deal with British governors, who appreciated the role of the Church in containing dissent, than with the francophone liberal professionals who were secularists.
First Vatican Council
According to Jeffrey P. von Arx,
The response was a condemnation of Gallicanism as heretical,
The Council also asserted papal primacy. In July 1870, it issued the Dogmatic constitution Pastor aeternus, defining four doctrines of the Catholic faith: the apostolic primacy conferred on Peter, the perpetuity of this primacy in the Roman pontiffs, the meaning and power of the papal primacy, and Papal infallibility.
Von Arx compares this to "...the great empires and national states of the 19th century, which used new means of communication and transportation to consolidate power, enforce unity and build bureaucracies." "Cardinal Henry Edward Manning in Great Britain thought unity and discipline within the church were of the utmost importance in protecting the church and advancing its interests in a liberal, democratic state, and so he was one of the strongest advocates of the ultramontane position." The English bishops at the Council were characterized by their ultramontanism and described as "being more Catholic than the Pope himself".
Other Christian groups outside the Catholic Church declared this as the triumph of what they termed "the heresy of ultramontanism". It was specifically decried in the "Declaration of the Catholic Congress at Munich", in the Theses of Bonn, and in the Declaration of Utrecht, which became the foundational documents of Old Catholics (Altkatholische) who split with Rome over the declaration on infallibility and supremacy, joining the Old Episcopal Order Catholic See of Utrecht, which had been independent from Rome since 1723.
As with previous pronouncements by the pope, Liberals across Europe were outraged by the doctrine of infallibility and many countries reacted with laws to counter the influence of the church. The term "ultramontanism" was revived during the French Third Republic (1870–1940) as a pejorative way to describe policies that went against laïcité a concept rooted in the French Revolution. French philosopher Jacques Maritain, noted the distinction between the models found in France and the separation of church and state in the United States in the mid-twentieth century. He considered the US model of that time to be more amicable because it had both "sharp distinction and actual cooperation" between church and state, what he called "an historical treasure" and admonished the United States, "Please to God that you keep it carefully, and do not let your concept of separation veer round to the European one."
After Italian Unification and the abrupt (and unofficial) end of the First Vatican Council in 1870 because of the outbreak of the Franco-Prussian War, the ultramontanist movement and the opposing conciliarism became obsolete to a large extent. However, some very extreme tendencies of a minority of adherents to ultramontanism – especially those attributing to the Roman pontiff, even in his private opinions, absolute infallibility even in matters beyond faith and morals, and impeccability – survived and were eagerly used by opponents of the Catholic Church and papacy before the Second Vatican Council (1962–1965) for use in their propaganda. These extreme tendencies, however, were never supported by the First Vatican Council's dogma of 1870 of papal infallibility and primacy, but were rather inspired by erroneous private opinions of some Roman Catholic laymen who tend to identify themselves completely with the Holy See.
At the Second Vatican Council's Dogmatic Constitution on the Church Lumen gentium, the Roman Catholic Church's teaching on the authority of the pope, bishops and councils was further elaborated. The post-conciliar position of the Apostolic See did not deny any of the previous doctrines of papal infallibility or papal primacy; rather, it shifted emphasis from structural and organizational authority to doctrinal teaching authority (also known as the magisterium). Papal magisterium, i.e. papal teaching authority, was defined in lumen gentium No. 25 and later codified in the 1983 revision of Canon Law.
Some claim the Catholic Social Teaching (see Distributism) of subsidiarity contradicts ultramontanism and accuse it of decentralizing the Roman Catholic Church, whereas others defend it as merely a bureaucratic adjustment to give more pastoral responsibility to local bishops and priests of local parishes. However, subsidiarity involves the distribution of authority in structures outside of the Church's clergy and thus does not contradict ultramontanism.
Challenges to ultramontanism have remained strong within and outside Roman jurisdiction. Ultramontanism has particularly overshadowed ecumenical work between the Roman Catholic Church and both Lutherans and Anglicans. The joint Anglican-Roman Catholic International Consultation published The Gift of Authority in 1998 which highlights agreements and differences on these issues.
Position of other traditional churches
Ultramontanism is distinct from the positions adopted by the other traditional churches, particularly the Anglican communion, Eastern Orthodox communion, the Oriental Orthodox communion, or the Church of the East. These churches regard the pope as having been primus inter pares when the churches were united in full communion, and generally still acknowledge that status today, albeit in an impaired form due to disunity; similarly they do not recognize the doctrines of infallibility or the pope's alleged universal jurisdiction over patriarchates and autocephalous churches other than that of Rome itself, except insofar as this is part of the concept of primus inter pares.
In the joint agreed statement "The Gift of Authority" (1999) The Anglican communion and the Roman Catholic church were agreed on the collegial nature of the life and work of bishops.  Similarly both churches acknowledged the role of episcopal primacy within the college of bishops.  On the question of the universal primacy of the Pope, the joint report found common ground, and stated that a "particular conclusion" of their discussions had been "that Anglicans be open to and desire a recovery and re-reception under certain clear conditions of the exercise of universal primacy by the Bishop of Rome";  nonetheless a clear distinction remained between the Anglican view of a universal primacy exercised within a universal collegiality, and the Roman Catholic view of a universal primacy with actual universal jurisdiction.