Thanks for the attachments. My mother, Margaret Wood, has spent some time flicking through the many pages. She was somewhat surprised to see that one of her best friends from school in Grantham was in fact a relation!
We are still seeking out info on Jenny Sentance and her siblings, including the Ellis brothers. In fact, on a recent trip to france I was able to visit the First World War Cemetary at Gommecourt Wood at the northern end of The Somme and visit the grave of A Ellis.
My mother knows a few other people named in the tree and is waiting to speak to them and find out if they know anything that can be added to your research.
Out of curiosity, have you come across the Fancourt name in your searching and, if so, can you shed any light on its origin and where I might find more info?