The portrait miniature of Cardinal Zbigniew Oleśnicki on a letter of indulgence issued in 1449 for the Church of All Saints in Cracow by Marek Walczak

“…It was only in 1447 that Oleśnicki had relinquished the camp of the Council’s supporters, regarded by Rome as schismatics, and endorsed the rightful pope, Nicholas V. Oleśnicki received the cardinal’s hat sent from Rome in Cracow Cathedral, on 1 October 1449. …”
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