Complex sentence: Built in 1863 for James M. Hocker, in 1869 it became the home of Robert Graham, who became the first president of Hamilton College, having left his previous position as the president of Kentucky University's College of Arts and Sciences.
Split into simpler sentences: Built in 1863 for James M. Hocker, it became the home of Robert Graham in 1869. Graham became the first president of Hamilton College, having left his previous position as the president of Kentucky University's College of Arts and Sciences.