Must admit, we missed that the Heads name was also Hayes, but as advised, Dad George Hales (born 1830 Stockbury) is still alive in '81, '91 and '01 censuses - in the same house (59 Henry Street, Chatham). Can also advise that whilst there are eight brothers/sisters, none are Minnie of that age/married name.
Unfortunately she was only 14 in 1881 census and with no occupation, but have tried working thru the various Emma's born Chatham, without success.
Will keep looking again now with a married name of "Leigh",
Thanks,
Al & Al