Hello,
The Crossley family story is that Jennifer was the daughter of the Jessel family - a tea plantation owning family in Kenya- she married out and a very junior British army aide in the Governor's residence. He was from Yorkshire.She did come to England and lived in Sussex before moving here to Norfolk, I met her just before she died, a very imperious lady. I have tried your jennifer and I don't think she fits, I wish she did. She was my daughter in law's grandmother.