Complex sentence: When rivers returned to Cheshire he appointed Holton castle under the command of captain walter primrose, which he fortified, however it fell to two parliamentary sieges, the first led by Sir William Brereton in 1643.
Split into simpler sentences: When Rivers returned to Cheshire he appointed Holton Castle under the command of Captain Walter Primrose, which he fortified. However it fell to two parliamentary sieges, the first led by Sir William Brereton in 1643.