15 - (1819)
Birth and christening, in Lavaltrie, of the twins Léocadie and Marie-Louise, daughters of unknown parents.  Madame Rosalie Roy called Desjardins, midwife, wife of Antoine Cadron and mother of Rosalie, saves from certain death the children that she had been ordered to kill as of their birth.  She escapes with the twins wrapped in her apron, and she leaves them in the care of Rosalie and Jean-Marie Jetté.

15 - (1824)
Purchase of land in Saint-Hyacinthe by Jean-Marie Jetté, from the owner Charles Jarret.   This sale is both illegal and fraudulent.   Therefore, in late 1826, all the possessions of Rosalie Cadron and Jean-Marie Jetté will be confiscated.   At the beginning of 1827, we find them in Montreal where Paul Jetté, brother of Jean-Marie, welcomes them.  It is with the utmost faith and courage that they begin anew from square one.

15 - (1989)
Decreed by His Eminence Cardinal Paul Grégoire the creation of a mini-tribunal to hear the testimony of Sisters Fabiola Thiffault and Hélène Rioux, both 86 years old, who worked towards the canonisation.

16 - (1989)
Testimony of Sisters Fabiola Thiffault and Hélène Rioux taken by Mgr André- Marie Cimichella, Episcopal vicar in the proceedings for sainthood in Montreal and president of the mini-tribunal.

18- (1819)
Departure of the twins Léocadie et Marie-Louise, of unknown parents, from the Jetté household for the Grey Nuns General Hospital in Montreal.

21 - (1806)
Birth and christening of Sophie in the parish of Saint-Antoine in Lavaltrie, Rosalie's younger sister who was 12 years old at the time.

22 - (1827)
Renunciation by Jean-Marie of his father's estate which was "more onerous than profitable".

25 - (1988)
Inauguration of Centre Rosalie-Cadron Jetté, office for the canonisation located at the Motherhouse in Cartierville.

26 - (1996)
Unanimous vote by the Historian Counsellors of the CCS in Rome after extensive study of the virtues and report of sainthood of the Servant of God, Rosalie Cadron-Jetté, Mother de la Nativité in religion.