Complex sentence: At the Disruption of 1843 Duff sided with the Free Church, gave up the college buildings, with all their effects, and with unabated courage set to work to provide a new institution.
Split into simpler sentences: At the Disruption of 1843, Duff sided with the Free Church. He gave up the college buildings, with all their effects, and with unabated courage set to work to provide a new institution.