The Mother Teresa 26 August 1910 to 5 September 1997 also known as Blessed Teresa of Calcutta, was a Roman Catholic religious sister and missionary. She moved to the Ireland and then to an India, where she lived for most of her life. The Mother Teresa founded the Missionaries of Charity, a Roman Catholic religious congregation, which in 2012 consisted of the over 4,500 sisters and was active in 133 countries.