The Council had been preceded by the antitrinitarian Collegia Vicentina (Lat.
[1][2] In late 1549 or early 1550 Anabaptists began to assemble again in Vicenza.
[3] In September 1550 sixty Anabaptist leaders, including 20 or 30 exiles from Switzerland, assembled in Venice.
[4] Under the impetus of two followers of Servetus, "Camillo Renato" (Paolo Ricci) and a "Tiziano" (possibly Lorenzo Tizzano)[5] the synod agreed on a set of anti-Trinitarian principles.
[6][7] The exact attendance list is unknown, since the conclusions were published anonymously, but various significant figures were likely to have been among the sixty.