María Dolores Rodríguez Sopeña was a Spanish nun and activist born in 1848. Dedicated to serving the marginalized, she provided care for the sick and the poor in Spain, Puerto Rico, and Cuba. After experiencing visual impairment following an operation, she focused her life on religious education and social work. She founded the Sisters of the Catechetical Institute in 1901, an order that expanded to include communities in Rome and the Americas. Her extensive efforts in establishing religious and secular organizations for the disadvantaged defined her spiritual and social legacy.