I believe I may have found a connection between Ager families Silberrad and Rice surnames. it could be a longshot but worth considering!
My gg Grandmother was Louisa Ann Ager Chn 03.-5.1837 St mary's Whitechapel middlesex London. Louisa's father was Fred Ager, I beleive may be the brother/Cousin of Henry. Harriet is also a family name of the Silberrads who were Louisas'mothers family.Agers,Rices and Silberrads often married into each other,middlesex area London.
I know it sounds complicated. If you think this line is worth following please contact me. or try IGI Family org. Start with Romeo george Rice marriage 1879 Chelmsford to louisa Ann Ager and work back. Lots of luck.Linda