Complex sentence: Richard of Cirencester (c.1335--c.1401), historical writer, was a member of the Benedictine abbey at Westminster, and his name (Circestre) first appears on the chamberlain's list of the monks of that foundation drawn up in the year 1355.
Split into simpler sentences: Richard of Cirencester (c.1335--c.1401), historical writer, was a member of the Benedictine abbey at Westminster. His name (Circestre) first appears on the chamberlain's list of the monks of that foundation drawn up in the year 1355.