Here’s a biography from Common Prayer:
William Wilberforce, an evangelical Christian in eighteenth-century England, dedicated his life to abolishing slavery. In 1780, Wilberforce was elected to Parliament. After an experience of spiritual rebirth, Wilberforce began to see his life’s purpose: to use his political life in the ser-vice of God. He believed that there was no evil greater than the institution of slavery. “Let the consequences be what they would,” he wrote. “I from this time determined that I would never rest until I had effected its abolition.” In 1798, he began his campaign: speaking, circulating flyers and petitions, and introducing bills in Parliament. In 1806, Wilberforce managed to get a bill in Parliament passed that prohibited slavery in all British colonies. By the time Wilberforce died in 1833, Parliament had finally passed a bill that would free all slaves throughout the British Empire.