Oh I wish our relations made things slightly easier for us by having one name throughout life!
Sarah COMBELLACK's 1879 Bristol birth cert has turned up, and yes, she has to be the Fanny with Henry and Flora COMBELLACK in Llandaff, Cardiff in 1881 and the Sarah with Charles H CHARLES, widower, in Plymouth in 1891.
It shows her as the dtr of Charles Henry COMBELLACK, miller, and Hannah (sic) formerly DAWE.
So, unless Henry married a Flora between 1879 when Sarah was born, and 1881 when he shows up in Wales with wife Flora, I currently think Flora is just another name for Honor/Hannah, after all she has to keep up her side of the name-changing equation, given how many names we've found her husband had.
So, I've removed Flora, and shifted Ada and Sarah/Fanny to being daughters of Honour, and republished Honor's web page (or should that now be Hannah's web page?