Have just discovered this thread.My Great Great Grandfather was Stephen Voaden born in Bratton Clovelly 1830.My maternal grandmother was born Florence Sarah Lillian Voaden born 27/5/1900. Her father was John Edward Webb Voaden( m Maria Louise Stringer).Interestingly he also had a brother called George H Webb Voaden.John's father was Stephen and his mother Mary Adams Webb. It wasn't until I obtained a copy of their marriage certificate that I found Stephen was a widower so it all fits in with your info about Rebecca Edwards. I had only researched back as far as Stephens parents so your info is brilliant.Through family hearsay I had heard that Stephen had been enroute to or from London when he met a woman from Devon that he married!
It appears that your great grandmother and my great grandfather were brother and sister.
Denys conntacted me last year but was unable to tell me much about my branch of the Voadens.