Just received Emily’s birth certificate and she is a match, what a tangled web!
Thank you very much Debra for your input, she was hiding right in plain sight.
There is a little more I should add. In 1891 (with her grandparents )she lived just a short walk from our cottage. I had come across her in a different search when I was doing some local history research.
Widowed grandfather married the servant and went on to have a whole new family, again just up the road from us.
Again your new eyes have put to rest this problem. Thank you