In 1355, Bolko III, with several other Silesian Dukes, went to Italy with King Charles of Bohemia, who came to Rome for his coronation as Holy Roman Emperor; ten years later, in 1365, he made a journey from Luxembourg to Avignon, and in 1377, together with King Louis I of Hungary and Władysław Opolczyk, he made a military expedition to Bełz.
As a gesture of reconciliation with the Church, Vladislaus founded the Pauline monastery of Our Lady at Jasna Góra in Częstochowa; also, the Duke brought the famous Black Madonna of Częstochowa, who according to oldest documents, travelled from Jerusalem, via Constantinople and Bełz, to finally reach Częstochowa in August 1382.