Teresa Ellen Dease, foundress of a religious congregation, professed her vows on August 3, 1847 and went to Toronto amidst the typhus epidemic.
Teresa Ellen Dease (4 May 1820  1 July 1889) was a Roman Catholic nun and the foundress of the Loreto Sisters (Institute of the Blessed Virgin Mary in Canada and in North America. The Institute of the Blessed Virgin Mary, whose members are commonly known as the Loreto Sisters, is a Roman Catholic religious congregation of women dedicated to education founded in Saint-Omer by an Englishwoman, Mary Ward, in 1609. Dease professed her vows on August 3, 1847 and two days later set out for Canada with four other sisters. They arrived in Toronto September 16, 1847 in the midst of a typhus epidemic. 
