The Sisters of the Most Holy Trinity are Roman Catholic nuns whose purpose is the glorification of the Most Holy Trinity and elementary education. Founded in 1762 in Rome, the group came to the United States in 1920 and its Motherhouse is set on the glorious grounds of the National Shrine of Our Lady of Lourdes in Euclid, Ohio. The shrine and grotto are replicas of the original shrine in Lourdes, France, where Mary appeared to St. Bernadette. In addition to protecting, maintaining and glorifying the shrine and providing religious services, the Sisters are active in the diocese and the community.