Regina Protmann was a 16th-century religious sister and the founder of the Sisters of Saint Catherine. Born in Braniewo in 1552, she dedicated her life to serving the poor and the sick during the era of the Counter-Reformation. She broke social norms of her time by living independently with other women to provide nursing care and establish educational opportunities for girls. Her commitment to social welfare and religious devotion led to the creation of a lasting congregation and several pioneering institutions.