Complex sentence: Palmer married his second wife, Sarah Ann Derbyshire, in 1836, and bought land near Laurel, Indiana, in the Whitewater Valley, where he supervised a construction project for a canal.
Split into simpler sentences: Palmer married his second wife, Sarah Ann Derbyshire, in 1836. Palmer and Sarah bought land near Laurel, Indiana, in the Whitewater Valley, where he supervised a construction project for a canal.