Thanks for your message.I'm not a descendent of the HOLLINGUMs but only connected via my great aunt Elizabeth COCK who married Richard Dominy.
My Richard Dominy was 28 in 1881 whilst yours, I see from the 1881 Census, was 46! There are not a great number of HOLLINGUMs around and I suspect both your Richard and mine are related fairly closely a little further back.
I gather from my second cousin (a HOLLINGUM relation) that Richard's ancestors were:
father=John Dominy m. Elizabeth JOHNSON gfather=Thomas m Elizabeth BUSBY ggfather= Josiah m. Elizabeth DOMINY ggfather=Thomas m Rebecca MUNCHIN
Do you have any cross-overs here?
Do reply via my email if you wish [firstname.lastname@example.org] as I may be able to send you other details more conveniently. I could also put you in contact with other HOLLINGUMs I've located.