Ah, yes, WifeyWebb ... the Gertrude Rowley mystery.
No-one knows of her or has ever heard her name. We can find no trace of a suitable birth for a Gertrude Rowley which involves any of the children of either William or Alice (to make her a grand-daughter). We cannot find her in 1881 ... or in 1901 ... or having died or married between 1891 and 1901.
There IS a Gertrude Rowley but, as I think a recent posting has said, she is accounted for in 1891 so it can't be the same one.
And, more mysteriously, we can't find our Catherine at all on the 1891 census. We have even considered whether Gertrude and Catherine are one and the same person ... unlikely I know but we can't cross reference anything that connects them even though we think that they are both grand-daughters of Alice Morgan (nee Jones, later Roberts). Are they maybe twin sisters and at the point of separation one went with the mothers family and one with the fathers? Again conjecture with nothing to back it up but this mystery is altogether baffling.
We have three old, but pretty lucid, relatives all of whom knew Catherine personally ... but they seem to be sworn to some sort of secrecy between them about what they actually know about her very early days. Which, not surprisingly, makes us all the more keen to find out ... there is a mystery there ... needs a sort of genealogical Scooby Doo to get to the bottom of it!!!!