Hello again Rob, I've finally found out the parents of this Nicolas. He was a tailor bapt 25 June 1781 at the Town Church Guernsey and married Janne Coles on 6 Feb 1801 also at the Town Church.His parents were Thomas Renouf and Marthe Trachy.
There were two children bapt in Town Church before they emmigrated to Philedelphia. Jean Nicolas Renouf bapt 18 Sept 1801 and Susanne bapt 23 Oct 1803.
Incidentally Nicolas was a twin but I dont think his brother William survived. Cheers Jacky in NZ