The situation of the Orthodox clergy in Transcarpathia in the XVI-XVII centuries deteriorated significantly. He was oppressed by both Catholics and Protestants. In the confrontation between Catholics and Protestants, the Orthodox clergy decided to compromise with Rome. So on April 24, 1646, in Uzhgorod castle, 63 Orthodox priests led by Vasyl Tarasovich in the presence of the Catholic Bishop of Yeger, Gyorgy Yakushich, accepted the Union, that is, they agreed to join their Church to the Catholic one and recognized the supremacy of the Pope. However, a number of exceptions were made, in particular, the rite of the Greek Church was preserved. The agreement was implemented very slowly. Only in 1651, Rome approved the first Greek Catholic Bishop of Mukachevo, Peter parthenius. Only in 1771 was the Greek Catholic diocese of Mukachevo itself canonized.
