(1580 or 1584–1623).
John Kunsevich, who was Abp. of Polotsk from 1618, was the first saint of the E. Church to be formally canonized by the RC Church. He did much to restore ecclesiastical life where there was still unrest following the Union of Brest-Litovsk; he was killed by a rival faction. Feast day, now 12 Nov.