[From the research of D. Trenchard]:
"I have no record of the marriage of George T & Sarah Burchell, but if it was a non-conformist one, then the records may well be lost or 'mislaid'. However, amongst the records at the Somerset County Record Office (SCRO), Taunton, is a marriage settlement dated 1827. I have never looked at this deed but my records show that it is described as 're: George Trenchard of Chaffeigh in Thorncombe, only son of Hugh Trenchard of Thorncombe, clothier, deceased, and Sarah Diana Burchell of Yeovil, spinster.' I have no idea how this has ended up in the Somerset CRO since Thorncombe was then in Devon, now in Dorset, unless this was the copy of the settlement held by Sarah's father of Yeovil, Somerset. I will add it to my list of things to look at when next I visit SCRO (not in near future) and will take a photocopy if suitable.
"Sarah Burchell was George's second wife, and the marriage only produced Emma Fitzer & Julianna as far as can be traced."