Complex sentence: Alongside him died Joan Soan (de Gotó) and Santiago Kisai, of the Society of Jesus, in addition to twenty-three clergy and laity, all of whom were canonized by Pope Pius IX in 1862.
Split into simpler sentences: Alongside him died Joan Soan (de Gotó) and Santiago Kisai, of the Society of Jesus, in addition to twenty-three clergy and laity. All of whom were canonized by Pope Pius IX in 1862.