Hi Sheppysearch,
I found this entry in the 1891 census for Milton, Kent:
Ref: RG12/717 Folio 19 Page 26
Address: 9 Flushing Street (Lodging House)
James DAVIS, Head Lodger, M, 26, General Labourer, b. Kent, Harrietsham
Alice DAVIS, Lodger (Wife), M, 26, b. Sussex, Brighton
William DAVIS, Lodger (Son), S, 2, b. ditto
Some of the text has been crossed out and I've represented this with the strikethrough.
Could this be your Great Grandfather, his first wife and your great uncle Bill? Harrietsham is about 3 miles from Hollingbourne.
Regards,
Allan