Direct quotation from two paragraph’s in Wikipedia.
“Edith Stein, also Saint Teresia Benedicta of the Cross, sometimes also known as Saint Edith Stein (October 12, 1891 – August 9, 1942), was a German Roman Catholic philosopher and nun, regarded as a martyr and saint of the Roman Catholic Church. Born into an observant Jewish family but an atheist by her teenage years, she was baptized January 1, 1922 into the Roman Catholic Church and received into the Discalced Carmelite Order as a postulant in 1934. Although she moved from Germany to the Netherlands to avoid Nazi persecution, in 1942 she was arrested and sent to the Auschwitz concentration camp, where she died in the gas chamber. She was canonized by Pope John Paul II in 1998.
Stein is one of the six patron saints of Europe, together with Saint Benedict of Nursia, Saints Cyril and Methodius, Saint Bridget of Sweden and Saint Catherine of Siena.”