John was born in
Dukla,
Poland, in 1414. He joined the Friars Minor Conventual, and studied at
Kraków. After being ordained, he preached in
Lwów (then part of
Poland) and in what are now
Moldavia and
Belarus and was the superior of Lwów. He may have joined the
Observants while efforts were being made to unite the two branches of the
Franciscans. Though he went
blind when he was 70, The cause for his beatification was opened on 22 June 1948, and the process of evaluating a miracle attributed to him began on 18 January 1951. ==References==