How old was Saint Teresa when she died?

It depends on which Saint Teresa. Saint Teresa of Ávila:67 yrs. old: March 28, 1515- October 4, 1582 Saint Teresa Margaret of the Sacred Heart: 23 yrs. old: July 15, 1747- March 7, 1770 Saint Thérèse de Lisieux: 24 yrs. old: January 2, 1873- September 30, 1897 Saint Teresa Benedicta by the Cross: 50 yrs. old: October 12, 1891- August 9, 1942 Saint Teresa of the Andes: 19 yrs. old: July 13, 1900- April 12, 1920 Mother Teresa of Calcutta: 87yrs. old: August 26, 1910- September 5, 1997