Descendants of Joan (Jone) Jewell

Joan (Jone) Jewell married John Ellis on 29 Apr 1769 in Camborne, Cornwall.
Children:

John Ellis chr. 21 Oct 1770, Camborne William chr. 5 Sep 1773, Camborne
Ann chr. 3 Mar 1776, Camborne Richard chr. 19 Sep 1779, Camborne
John chr. 23 Jun 1782, Camborne Anne (my relative) chr. 26 Dec 1787, Camborne, m. 23 Feb 1809 to Thomas Nicholas, d. 7 Aug 1828.

I would be grateful for any information you might have on this couple.