Hi Jo
Forgive my ignorance, but this is the first time that I have ever heard of the Creed Register. Is it a register just for Birkenhead Union, or was it for each Union, or was it a nationwide register (of adoptions?) that included the Union from which someone came?
I appreciate this maybe sensitive for you to share as it involves your own grandmother, but was it your grandmother who was adopted as a result of coming under the care of Birkenhead Union? If so, was Lucy Price her adopted name, her married name or her birth name?
It just seems strange that they would record her death (at 40) if she was adopted - or did she have a child that was born in Birkenhead Union? And did your grandmother then die around that time causing the adoption of her child? Presumably out of wedlock, otherwise Lucy Price would be her married name?
I would not rule out 1882. The age of death maybe a round-up or guesswork on the part of the Union. I know they did that for the death of my gt gt grandmother in a workhouse in Manchester - in fact they were way out. If they had put 39 or 41, it would seem less of a guess, but 40 suggests it may be an estimate.
I hope this helps
Fiona