Who When Where

I hope this helps: 1901 Census, England RG 13 Piece No 2397 Folio 159 page 26 Parliamentary Borough or Division: Bristol Northern Municipal Borough/Ward: Stapleton Ecclesiastical parish/district: St Mary Fishponds I agree it's a long shot, but I couldn't find anything else that might relate to Emily...

This is a long shot, but on the Bristol census for 1901, there's a patient in the local asylum listed only as EM, born in 1854, with surname unknown. Is it possible that following the birth of Caroline in 1886, Emily Mary suffered post-natal depression? When this was severe, it wasn't unknown for su...

Any chance he's the John South, born 1856 in London, Middlesex, married, and working as a butler in 1891, in the household of William Macneill, Tyndale Lodge, Park Side, Wandsworth?

Eliza is on the 1881 census but not 1891. Have you checked for a possible marriage or death during those years? Have you sent for the death certificate of the Eliza Riley who died in Chelsea in 1894? (Dec Q Vol 1a, pg 239) You refer to it as if this Eliza is 'yours' but you need the certificate to p...

Heart failure can be a complication of pneumonia; the lungs don't work as they should, which puts stress on the heart.

Cardiac failure
Broncho Pneumonia

Clerkenwell became part of the Holborn Registration District in 1869, so maybe widen/re-direct your search?

I know you're searching for Eliza, but on trying the GRO death records, and being careful to tick 'exact match' against the name Eliza, Elizabeth Wilson comes up (aged 41, died SQ 1870 Vol 01C, page 405, Poplar Union). You may have already ruled her out, but I'm passing her entry on, just in case.

As yet, the only thing I can offer is a baptism listed on freereg.org.uk for Frances Murch, baptised 2nd December 1793, St Peter, Roborough, Devon, father Thomas Murch, mother Jane. Hopefully, I'll search further tomorrow.

As you say, Robert, Georgina and Maggie all seem to be missing from 1911; I can't find them separately or together. As Robert was from London, did they miss enumeration because they were all travelling to or from the capital?