Crowmarsh Gifford Norman. A north transept with a pointed arch was added in about 1200. The building was restored in 1836 and 1868. In 1139 King Stephen built a wooden fort in Crowmarsh, the first of a series built in opposition to Wallingford Castle, which supported his cousin Matilda during the civil war known as The Anarchy. The forts were probably dismantled as a result of the Treaty of Wallingford of 1153. The castle at Crowmarsh consisted of a wide ditch surrounding an enclosure measuring . In 1701 agriculturist Jethro Tull invented his revolutionary seed drill here. In 1770 nearby Mongewell Park
William Bullock (inventor) age 21, he was running his own machinery shop in Savannah, Georgia. At this time, Bullock invented a shingle-cutting machine, but his business went broke when he was unable to market it. While in Georgia Bullock married Angeline Kimball and had seven children with her. When his wife died in 1850, he married Angeline's sister Emily, who bore him six children. Bullock returned to New York and designed such devices as a cotton and hay press, a seed planter, and a lathe cutting machine. He also invented a grain drill, which won him a prize from the Franklin Institute in