The death of Don Bosco's mother in 1856 prompted Rua to bring his own mother to live at the oratory where she remained for the next two decades. In 1857 Bosco drew up a set of rules for his helpers.
Don Bosco's mother's passing in 1856 led him to bring his own mother to reside at the oratory, where she lived for the following two decades.  In 1857, Bosco established guidelines for those assisting him.