Matteo Gribaldi Mofa was an Italian legal scholar who became an Arian

Arianism

Arianism is the theological teaching attributed to Arius , a Christian presbyter from Alexandria, Egypt, concerning the relationship of the entities of the Trinity and the precise nature of the Son of God as being a subordinate entity to God the Father...

 and defender of Michael Servetus

Michael Servetus

Michael Servetus was a Spanish theologian, physician, cartographer, and humanist. He was the first European to correctly describe the function of pulmonary circulation...

.

He was instrumental in the spread of antitrinitarianism to Poland through his Polish students in Italy including Piotr of Goniądz, and in Germany the pole Michał Zaleski, as well as on Italian exiles in Geneva who later traveled to Poland and Transylvania such as Giorgio Biandrata

Giorgio Biandrata

Giorgio Biandrata or Blandrata , was an Italian physician and polemicist, who came of the De Biandrate family, powerful from the early part of the 13th century, was born at Saluzzo, the youngest son of Bernardino Biandrata.He graduated in arts and medicine at Montpellier in 1533, and specialized in...

, Giovanni Paolo Alciati

Giovanni Paolo Alciati

Dr. Giovanni Paolo Alciati della Motta was an Italian Calvinist and friend of Giorgio Biandrata and Giovanni Valentino Gentile, one of the participants of the antitrinitarian Council of Venice in 1550. Like Biandrata and Negri he moved to in Poland.-References:...

, and Giovanni Valentino Gentile

Giovanni Valentino Gentile

Giovanni Valentino Gentile was an Italian humanist and non-trinitarian.As a young man he was influenced by Giorgio Siculo's teaching against paedobaptism and transubstantiation...

.

Lelio Sozzini lived with Matteo Gribaldi in Padua for two months during the autumn of 1553.