Are you aware that Pope Benedict XVI, as Cardinal Ratzinger in his capacity as head of CDF, condemned Ultramontanism as a heresy?
"14. In recalling these essential points of Catholic doctrine on the primacy of Peter's Successor, the Congregation for the Doctrine of the Faith is certain that the authoritative reaffirmation of these doctrinal achievements offers greater clarity on the way to be followed.
This reminder is also useful for avoiding the continual possibility of relapsing into biased and one-sided positions already rejected by the Church in the past (Febronianism, Gallicanism, ultramontanism, conciliarism, etc.)."
http://www.ewtn.com/library/CURIA/CDFPRIMA.HTM
Ultramontanism ascribes infallibility to every one of the pope's actions including his private ones.
Perhaps if you read Card. Ratzinger's explanation of the Roman Primacy, you will see, it is you who are mistaken.
Maybe you should repent of you Ultramontane heresy.
You give, likely intentionally, a false definition of "ultramontanism" and you falsely describe it as a "heresy."
You wrote:
Ultramontanism ascribes infallibility to every one of the pope's actions including his private ones.
That's something you invented.
What Ultramontanism actually is: the belief that the Pope should have temporal political power not only over the Vatican City State (or the Papal States, which was the case when Ultramontanism as a movement began) but over all Christian states and have authority over the monarchs, parliaments, and other institutions of civil government in such states.
This was never condemned by the Church as a heresy, since it is primarily a political and not a doctrinal position. The Vatican rebuked the Ultramontanists for advocating a political position which was deleterious to the Church's relations with Christian states like France and Germany - it did not condemn them as heretics.
Maybe you should repent of you Ultramontane heresy.
LOL! I'm assuming that in your mind that does not amount to an ad hominem.
The gaps in your education are really showing.
Since I don't hold nor have I ever held the notion that the Pope should have temporal authority over the constitutional government of the United States or any other Christian nation, it is simply silly to describe me as an Ultramontanist.
But even if I were to hold such a pointless political conviction, it wouldn't make me a heretic, since it isn't a heresy.