Pearmain is the name related to the Collins side of the family-- I have no problem with them as they are well documented back to the 1700s in Norfolk and beyond, and were rope makers in the East End from the 1850s onwards. The only blockage I've encountered is on the Parker side, where everything stops with Fanny, Stephen Horton and "Edward". Unfortunately, that is the vital link, and I'm stuck!!!! The only other possibilities, where the father's name is right, involve families outside East London. As Elizabeth Ann died in 1944 and her only descendants are well into their 80s, very little is remembered of her, other than that she was definitely born in West Ham.