Eldest of eight children born to Martin Lament and Lucia Cyganowska; three of her siblings died in childhood, deeply scarring young Boleslava. Trained in Warsaw, Poland as a seamstress, she returned to her hometown to open a tailor‘s shop with her sister Stanislava. In 1884 Boleslawa became a sister in the Congregation of the Family of Mary, an order in hiding due to czarist persecution. She served as tailor and teacher in several Congregation houses.
In 1893, just before making her solemn vows, Boleslawa questioned her call to this vocation; she left the Congregation and returned to her family home. She devoted herself to care for the poor and homeless in Lowicz and then in Warsaw where she and her sister Maria opened another tailor shop to support themselves. Director of a homeless shelter, she visited the poor and sick in the shelters and their homes, caring for their children, and making sure they had access to the sacraments and spiritual direction. When her father died in the cholera epidemic of 1894, Boleslava became the head of her family.
In 1900, with the death of her seminarian younger brother, Boleslawa felt again the call to religious life. She moved to Gorczynska Leocadia and learned weaving in order to have another trade to teach young girls to give them a chance in life. in October 1905, with some like-minded woman and Jesuit Father Felice Wiercinski, she founded the Congregation of the Missionary Sisters of the Holy Family to promote Christian unity, help the poor and teacher girls about Christian life; she served as the congregation’s first superior.
In the fall of 1907 the sisters moved their operation to Saint Petersburg, Russia. In 1913 they expanded their education work into Finland. The combination of the horrors of World War I and the Communist Revolution in 1917 led to persecution of all Christians in Russia; in 1921 Mother Boleslawa was forced to return to Poland, abandoning much of the work they had done in officially atheist Russia. She continued the work of the Congregation, and by her retirement in Bialystok in 1935 there were 33 houses, including one in Rome, Italy. Even in retirement, and with her health failing, she continued to open and work in schools and homes for single women. In 1941 she became paralyzed and was forced to spend her remaining years bed-ridden, advising her sisters and praying for their work.
- 29 January 1946 in Bialystok, Podlaskie, Poland of natural causes
- buried in the crypt under the church of Saint Anthony at the convent of Ratowo, Poland
- “Blessed Boleslawa Maria Lament“. CatholicSaints.Info. 11 April 2016. Web. 6 December 2016. <>