Translations:Rosary/16/en
Throughout this period there were four distinct forms of the rosary in use: (1) 150 Our Fathers, (2) 150 Hail Marys, (3) 150 Praises of Jesus, and (4) 150 or 50 Praises of Mary. The first synthesis of these four forms occurred in the fourteenth century when Henry de Kalker, a Carthusian monk, synthesized the Our Fathers and 150 Hail Marys, grouping the Hail Marys into tens with one Our Father between each decade.