Have found
2 William FOWELL b 1720 m 2a Sarah NICKOLS (b 1734 W Rudham d 5 Jun 1790) 11 Dec 1759 W Rudham, and another, name unknown, after 1790
Children of William and Sarah
7.......Richard b 1760 Castle Acre d 16 Sep 1820 Northwold m 7a
8.......Nathaniel b 1765, solicitor, d 13 Feb 1825
9.......Henry b 1770 Gasthorpe d 4 Feb 1835 m F11a Frances COCKSEDGE Hopton 19 Jun 1797
Note: In Ovington parish in 1829 a fuel allottment was made to William FOWELL and William RIVETT
10.....Stephen b 1778 Gasthorpe, Naval Surgeon, d 23 Oct 1813 Chatham, Kent
http://www.rgreen.org.uk/Fowell2.htmlCan't verify accuracy though. It does possibly go back 1 further generation.