[1][2] Tadini was ordained as a priest in 1870 and went on to found a religious congregation dedicated to the poor and ill while taking advantage of the Industrial Revolution to support women in work and education.
Tadini was baptized in the San Lorenzo Martire church in his hometown on 18 October 1846 with his godparents being Giambattista Scolari and Caterina Gadola.
Tadini's vocation to the priesthood grew over time but became more concrete when he attended his brother Giulio's first Mass and subsequent exposure to his activities as a priest.
[1] Tadini received ordination to the priesthood on 19 June 1870 from the Prince-Bishop of Trento Benedetto Riccabona de Reichelfels since the current Bishop of Brescia Girolamo Verzieri was in Rome for the First Vatican Council.
It was also there that he organized a soup kitchen that would serve hundreds after intense flooding caused a great deal of people to become homeless.
He revitalized parish initiatives that all had a pastoral focus at their heart and he founded what became known as the Workers' Mutual Aid Association in 1893 which was a form of social insurance for the ill and injured as well as the aged.
[5] In his parish he allowed the Third Order of Saint Francis to settle there and he also praised Pope Leo XIII for having issued Rerum Novarum.
[4] The informative process opened in the Diocese of Brescia on 13 January 1960 - in which he was given the title of Servant of God under Pope John XXIII - and had been assigned to collecting all documentation available on Tadini.
Theologians gathered all his writings in order to ascertain whether or not such texts were in line with the faith and voiced their assent to his publications in a decree issued on 5 March 1970.
The Congregation for the Causes of Saints validated the informative process on 27 October 1989 and opened the so-called "Roman Phase" in which the C.C.S.
The miracle needed for his beatification was reported to the postulation and investigated in a diocesan process that opened in April 1996 and closed one month later.
[4] The miracle required for his sanctification took place in the Diocese of Brescia and as such was investigated there as soon as the diocesan process opened on 16 June 2006.
In that Mass the pope said: "How prophetic was Don Tadini's charismatic intuition, and how current his example is today, in this time of grave economic crisis!"
[5] The miracle that led to his canonization was the healing of the couple Roberto Marazzi and Elisabetta Fostini who were sterile and unable to conceive despite several attempts from 2000 to 2004.