:
all incumbents were members of the Friars Minor (Franciscans, O.F.M.) ;
Apostolic Prefects of Ucayali • Friar
Augustin Alemany, O.F.M. (February 14, 1905 – September 1905) • Friar
Bernardo Irastorza, O.F.M. (September 1905 – 1912) • Friar
Francisco Miguel Irazola y Galarza, O.F.M. (January 28, 1913 – July 14, 1925
see below) ;
Apostolic Vicars of Ucayali • Bishop
Francisco Miguel Irazola y Galarza, O.F.M.,
Titular Bishop of
Flavias (
see above July 14, 1925 – 1939) • Bishop
León Bonaventura de Uriarte Bengoa, O.F.M., Titular Bishop of
Madaurus (July 10, 1940 – March 2, 1956) (later
Apostolic Vicar of San Ramon) == References ==