Maria Franciszka Siedliska (12 November 1842 – 21 November 1902), also known by her religious name Maria of Jesus the Good Shepherd, was a Polish Roman Catholic professed religious and the founder of the Sisters of the Holy Family of Nazareth.
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.
However the death of her father in 1870 enabled her to pursue her vocation.
In 1873 she decided to found a religious congregation that received the blessing of Pope Pius IX before being established during Advent in 1875.
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.The beatification process for the late nun opened in 1941 under Pope Pius XII.
She was declared a Servant of God, then confirmed as having led a life of heroic virtue.
She was named Venerable on 29 April 1980 and in 1989 Pope John Paul II beatified her.