There may be a problem with some of this. Certainly Henry Scadden and Elizabeth Bennetta had a son Henry (bapt 1 Dec 1782 in Gwinear). But I don't think this Henry married Elizabeth Mitchell. There is an almost exact contemporary Henry, baptised 8 Apr 1781, son of John Scadden and Ann Rodda, who fits better. I know some researchers have this the other way round! I have more details if you're interested - please contact me at
tbennett54@aol.com.
best wishes
Tony