St. Peter Claver was a Spanish Jesuit missionary who dedicated his life to serving African slaves in Colombia. Known as the "Slave of the Slaves," he baptized and ministered to over 300,000 enslaved people, providing them with food, medical care, and spiritual guidance. His tireless efforts for human dignity and justice made him one of the greatest missionaries of his time.
Peter Claver was born on June 26, 1580, in Verdú, a small town in Catalonia, Spain. He entered the Society of Jesus (Jesuits) in 1602 and studied philosophy and theology. While still in formation, Claver felt a strong calling to serve the missions in the New World. In 1610, he arrived in Cartagena, Colombia—a major port in the Spanish Empire known for its central role in the transatlantic slave trade. The conditions there were harrowing: ships regularly arrived packed with enslaved Africans who had endured horrific voyages across the Atlantic Ocean.
Ordained a priest in 1616, Peter Claver committed himself entirely to the care of enslaved people. From the moment ships docked, Claver boarded them to provide food, medicine, and spiritual care, offering comfort and performing baptisms. He did not shy away from the filthy and disease-ridden holds of the slave ships, choosing instead to meet the enslaved in their darkest moments. His tireless efforts earned him the title “Apostle of Cartagena” and, more personally, “the slave of the slaves.”
Peter Claver is believed to have baptized over 300,000 people during his 40 years of ministry. He was deeply committed to the idea that every human being, regardless of their social or legal status, possessed inherent dignity given by God. In a time when the lives of enslaved Africans were often deemed worthless by society, Claver’s work stood as a stark moral contrast. His ministry extended beyond spiritual guidance; he also intervened on behalf of enslaved individuals, advocated for humane treatment, and taught others to care for them with compassion.
Despite frequent illness, opposition, and the overwhelming scale of the human suffering he encountered, Claver never abandoned his mission. He lived simply and humbly, often sleeping on the floor and dedicating all he had to the service of others. In his later years, he suffered from a debilitating illness that left him bedridden. Even then, he continued his ministry through prayer and spiritual advice.
St. Peter Claver died on September 8, 1654. Although he was largely forgotten after his death, his legacy was revived over time, especially in Colombia and among African-descended populations in the Americas. Pope Leo XIII canonized him on January 15, 1888, and later declared him the patron saint of missionaries to African peoples. His example of unconditional love, justice, and humility continues to inspire people today.