Álvaro del Portillo was a Spanish civil engineer and Catholic bishop who served as the second prelate of Opus Dei from 1982 until his death in 1994. Born in Madrid in 1914, he joined Opus Dei in 1935 and was later ordained a priest in 1944. Throughout his ecclesiastical career, he held significant roles, including serving as a secretary and peritus during the Second Vatican Council. He was eventually consecrated as a titular bishop by Pope John Paul II.