I do not have specific information about Joseph and Sarah. My own Wykes family originated from Spratton as did quite a few other Wykes's. The Spratton Local History Society has some information on the local families from Spratton including the Wykes's. I am sure you have already visited the "world wykes web". Members of my Wykes family moved to Deptford in Kent. It is quite difficult to follow which Wykes belongs to who in Spratton though I imagine they are all related some how. My great great grandfather was William Wykes who married Elizabeth Thompson in 1852 in Cransley, a near by village to Spratton.