I had a sideways look at Charlotte Tillyer, her baptism (surname Tyllier) seems to be 23 October 1814 at St Mary the Virgin, Bedfont.
Do you have her death cert or are you just using the indexes?
Back to Richard, who married Charlotte, do you have a physical source for his parents being named as Richard & Elizabeth or are you using other peoples trees?
Richard Tucker married Mary Ann Roberts 9 Nov 1857 at St Andrew Barnsbury (she is on 1861 census as M A Tucker daughter in law under Richard's name)
Agnes Tucker married William Day 5 Aug 1866 at St George Bloomsbury
Dawn