[1] In childhood Siedliska was indifferent to her faith but after a local priest had converted her she became aware of a call to the religious life which her parents opposed.

[2] Siedliska expanded her congregation from Rome to her native Poland and elsewhere, including Great Britain, France and the USA where she visited during her extensive travels.

Franciszka Siedliska was born on 12 November 1842, the eldest child of Szlachta members, Adolf Adam Siedliski and Cecylia Marianna Morawska, of Jewish descent, in Roszkowa Wola, Poland.

[5] She received a private education from governesses in a household indifferent to faith, until she met the zealous Franciscan Capuchin priest, Leander Lendzian, who prepared her for her First Communion on 1 May 1855 when she resolved to offer herself to God.

Siedliska was granted a private audience with Pope Pius IX on 1 October 1873 and "her idea" received his apostolic blessing; she founded her new congregation in Rome at the beginning of Advent in 1875.

[2][3] Siedliska led eleven sisters to found a community in Des Plaines, then opened a house in Pittsburgh a decade later, in August 1895.

[6] Cardinal Francesco Marchetti Selvaggiani oversaw the apostolic process from 6 June 1941 to 6 March 1946 with additional testimonies coming again from places she had visited in her lifetime.

The miracle needed for beatification was investigated in Warsaw in a diocesan process overseen by Cardinal Józef Glemp from 21 February to 9 June 1986.