We have John Jackman & Ann Parnell married 10 April 1798 at Dittsham in the family line . Of their 8 children 2 males William b. Oct 1798 and John b. Abt Aug 1803.

William 1798 married Sarah Morrish on 1 Oct 1822, Dittisham. Of their 7 children 4 Males William Henry Jackman b. Dec 1825, Arthur b. Abt Feb 1831, James b. June 1833, and Robert b. March 1835.

All christenings of above at Dittisham, Devon.
Very interested in more info if possible. Thanks Jon.