The Blessed Teresa of Calcutta, M.C.,[1] commonly known as Mother Teresa (26 August 1910 – 5 September 1997), was a Roman Catholic Religious Sister and missionary of Albanian origin who lived for most of her life in India.Mother Teresa founded the Missionaries of Charity, a Roman Catholic religious congregation, which in 2012 consisted of over 4,500 sisters and is active in 133 countries.She was a controversial figure both during her life and after her death, Mother Teresa was widely admired by many for her charitable works, but also widely criticized, particularly for her campaigns against contraception and for substandard conditions in the hospices for which she was responsible.