Mother Teresa of Calcutta (August 27, 1910 - September 5, 1997) was a world famous Catholic nun and founder of the Missionaries of Charity whose work among the poor of Calcutta was widely reported.
She was awarded the Templeton Prize in 1973, the Nobel Peace Prize in 1979. She was beatified by Pope John Paul II in October 2003, hence she may be properly called Blessed Teresa by Catholics.