Ad diem Illum Laetissimum is an encyclical of Pope Pius X on the Immaculate Conception, Given at Rome in St. Peter's on the second day of February, 1904, in the first year of his Pontificate.
According to Giovanni Baglioni, he visited Rome in the pontificate of Paul V, where he painted some pictures for the churches.
The opposite side of the Arch of Titus received new inscriptions after it was restored during the pontificate of Pope Pius VII by Giuseppe Valadier in 1821.
Still with the nurturing assistance of the Augustinian Recollect Order, juridical autonomy was procured for the congregation which subsequently was declared an Institute of Pontifical Right by the Holy See on 20 November 1970, under the pontificate of Pope Paul VI.
During the 1970s and 1980s, he undertook several controversial and ground-breaking projects, mainly as a foreign correspondent for RAI, interviewing many soon-to-be-influential personalities of the decades (for example, Vespa interviewed then-Cardinal Karol Wojtyła in 1977, a full year before his election to the pontificate).
The revival of the congregation was proposed under the pontificate of Pope Pius XII, by Father Carl Egger.
During the pontificate of Pope Paul III, the Council fathers met for the first eight sessions in Trento (1545–47), and for the ninth to eleventh sessions in Bologna (1547).
As a seminarian at Écône in autumn 1973, he came to the conclusion that "the only logical explanation" for the New Mass and the alleged heresy of the Second Vatican Council was that Pope Paul VI had lost the Roman pontificate.
He contributed the sculpture of Ecce mater Dulcissima in the 2003 exhibit in Rome to celebrate the 25th anniversary of the pontificate of Pope John Paul II.
The winter mozzetta and the Paschal mozzetta fell into disuse during the pontificate of John Paul II (1978–2005), but their use was briefly restored by Pope Benedict XVI (2005-2013) before being discontinued again by Pope Francis.
When Nahabed died there was still much confusion and turmoil amongst the people and so the pontificate stayed vacant for more than a year until Alexander of Julfa was called to the throne by general consent.
During his pontificate the cathedral of Speyer was artistically frescoed by Johann Schraudolph (1846-53), and the renovation of its western front was completed (1858).
The only act of his pontificate was the suspension of the constitution Ubi periculum about the conclave.
During Pope John XXIII's pontificate, the regime successfully bypassed the Polish episcopate by being allowed to directly negotiate with the vatican, which allowed the government to isolate the polish episcopate.
At the beginning of his pontificate, he focused on the Albigenses, also known as the Cathars, a sect that had become widespread in southernwestern France, then under the control of local princes, such as the Counts of Toulouse.
He was thrown into prison in September 903 by the Antipope Christopher, and was probably killed at the start of the pontificate of Pope Sergius III.
His influence waned during the pontificate of Pope Benedict XV (1914 - 1922) making him ecclesiastically an isolated figure.
Both of these pre-pontificate events were depicted in the first half of the 2005 U.S. TV miniseries, Pope John Paul II in which Cary Elwes played the younger Wojtyla.