John Calvin was a French theologian, pastor and reformer in Geneva during the Protestant Reformation.
Menno Simons was a Dutch Anabaptist theologian and leader who founded the Mennonite movement, promoting pacifism and adult baptism.
Saint Ambrose was a renowned bishop of Milan and a key theologian, instrumental in the conversion of Saint Augustine and a major influence on the development of Western Christianity.
Amy Carmichael was a British missionary, humanitarian, and prolific writer, who dedicated her life to rescuing and caring for disadvantaged children in India.