Complex sentence: The first buildings on the site were those of a Remand Prison or Bridewell begun in 1813 by the architect Francis Johnston, it was built to relieve pressure on the Newgate Prison, Dublin.
Split into simpler sentences: The first buildings on the site were those of a Remand Prison or Bridewell. Begun in 1813 by the architect Francis Johnston, it was built to relieve pressure on the Newgate Prison, Dublin.