Good to see these various Walcot MILLARDs showing up. I have not yet found a connection to any others yet, but that would not surprise when I can get back a bit further.
I have just transcribed Walcot BTs for MILLARD 1819-33 - not yet in the computer but I hope to find time soon. Until then I'm happy to check for events. For example you probably already have this marriage:
John Perry MILLARD, OTP, B; Ann FELTHAM, OTP, S.
Married in church by licence 6 Mar 1831, by Gauis BARRY Curate.
(signed) John Perry MILLARD, Ann FELTHAM.
(witnesses) John SILCOCK, Sarah FELTHAM.
Have you seen the PERRY genealogy at Somerset Archives?
http://www.somerset.gov.uk/archives/A catalogue search on words Perry and Millard (using And option for words in fields) turns up 7 hits, first 6 of which are relevent - leases, mortgages, etc. that identify Mary Eleanor's parents John & Mary, sister Sarah, uncle Isaac, cousin John - thats just from the indexes.
I'll post my own lot soon - so far back to Thomas MILLARD b 1794, son of Thomas & Sarah, and brother of John b 1792. Thomas junior was a shoemaker of which there seem to be a disproportionate number in Walcot.
Steve