Complex sentence: The original row of four cottages were built in the 1840s by James and Sally Pearson, who were independent cloth manufacturers into a steep hillside with a traditional entrance for the lower rooms and a separate entrance to the upper floor at the rear of the cottages.
Split into simpler sentences: The original row of four cottages was built in the 1840s by James and Sally Pearson, who were independent cloth manufacturers. It was built into a steep hillside with a traditional entrance for the lower rooms and a separate entrance to the upper floor at the rear of the cottages.