Hi David,
I have just seen your message regarding Henry and Phyllis Casesmore. Henry's father, also named Henry was living in Bierton and married Elizabeth Robinson in Thame, Oxon, around 1750. Everyone is looking for more details of Henry Snr as there are Casemore families all round Bierton going back to the 1588's but we can't find his birth details.
If it is any help I have a family tree for Phyllis and can send you a copy,
regards,
Irene