By age 25, Maria had been married twice, to Baccio Mancini and them Guillermo Spezzalaste, widowed twice, and saw all seven of her children die in childhood. She became a spiritual student Saint Catherine of Siena and took the veil of the Dominican Third Order at the Holy Cross monastery in Pisa, Tuscany, Italy. Discipline there was lax, and many of the sisters were more meddlesome than holy. Maria was soon the leader of a small group of young, pious but timid sisters, all of whom moved to the new monastery of Saint Dominic in Pisa. Maria assisted its founder, Blessed Chiara Gambacorta, to make the house an example of the Domincan religious life. Prioress of the house for ten years. Received visions of the wounded Jesus.
- 22 January 1431 in Pisa, Italy of natural causes
- buried in the church of the Saint Dominic monastery in Pisa
- “Blessed Maria Mancini“. CatholicSaints.Info. 20 January 2017. Web. 25 April 2017. <>