Complex sentence: As Bishop of Chester, Porteus became known as a noted abolitionisthe took a deep interest in the plight of West Indian slaves, preaching and campaigning actively against the slave trade and taking part in many debates in the House of Lords.
Split into simpler sentences: As Bishop of Chester, Porteus became known as a noted abolitionist. He took a deep interest in the plight of West Indian slaves, preaching and campaigning actively against the slave trade and taking part in many debates in the House of Lords.