Complex sentence: Presbyterian College was founded in 1880 by the Rev. William Plumer Jacobs, who had arrived in the tiny town of Clinton in 1864, served as the pastor of First Presbyterian Church, and founded the Thornwell Orphanage.
Split into simpler sentences: Presbyterian College was founded in 1880 by the Rev. William Plumer Jacobs. He had served as the pastor of First Presbyterian Church in Clinton since 1864, and founded the Thornwell Orphanage.