Hi Jilly, Welcome back, and Congratulations!
The difficulty lies in the difference between searching for a very rare name like Skelcy/Skelsey and a very common name like Clark/Clarke - taken together (and in an illiterate age like the C19th you HAVE to take them together) this is I believe amongst the top 10 names in England (as opposed to GB). It seems to be particularly common in the Rugby area - I have 3 marrying in from the village or suburb of Long Lawford alone and even now I don't know if they're related to each other.
It doesn't help that Emma is sometimes called Emily, a common alternative. I just tried to find her in 1891 and the only one I can find that fits is Emma Clark (sic) daughter of Sarah widow at West Leyes (RG12/2456, free to view at Hunimex and Freecen). I think this is the same as Sarah Clarke in 1881 at Long Street, Long Lawford (RG11/3076, free at Familysearch) because she is the right age and also born in Long Lawford, but also because there is a "son-in-law" aged 1! (code for step-son, usually) Robert Colledge, and a Sarah Colledge married a George (sic) Clarke in October 1879 in Newbold (IGI), which is where Robert was born (says census). Colledge is not a common name. I'm used to inconsistencies of this sort, and really it needs sending for certs to sort it out, but I've just blown my certs allowance trying to beat the April 5th GRO price increase deadline (see threads in common room.)
Returning to the Skelcys, I think you know about the family of Charles' brother James Skelcy, that moved to Redbrook near Monmouth. One result of the sending for certs is that we are now as certain as can be that the John Skelsey who married Florence Lowe and moved to Frankton is the Cubbington one, the son of my great great uncle John. With the Coventry John Henry (always called that) doing a disappearing act, and the mystery Warwick ones proved to be children of my John's brother Frederick, this means that the one who married Jane Nash in the Bristol area, but who had children in Rugby, can only be the John who is your Charles' brother. I'm in touch with a descendant. The only other surviving sibling was Imri, who seems never to have married (still a bachelor at 38 when he tried to enlist in 1916, died in 1938.)
Hope all that makes sense! Chris