Esther Paniagua Alonso was a Spanish religious sister and missionary born in Izagre in 1949. A member of the Augustinian Missionary Sisters, she served as a nurse in Algiers, Algeria. She became known for her deep commitment to the local population, particularly disabled children, and her refusal to leave the country despite the dangers posed by the Algerian Civil War. She was killed in October 1994 while returning from Mass, an event recognized by the Catholic Church as martyrdom.