Hi Caroline,
Unfortunately I can't seem to find the Alfred you're looking for in the census's that I have access to.

However, here are the details of all the Greenhills that I did manage to find - the first one appears to be the main family.
Rolvenden Village
Rachel GREENHILL, Female 25, Kent
Mary GREENHILL, Female, 7, Kent
Elizabeth GREENHILL, Female, 5, Kent
Alfred GREENHILL, Male, 3, Kent
Joseph GREENHILL, Male, 4 months, Kent
HO107/475 ED3, Folio 34 Page 10
East Cross Left, Tenterden
Thos GREENHILL, Male, 60, independent means, Kent
Rose GERRNHILL, Female. rest of entry unreadable but looks like she was 65
John GREENHILL, Male poss 20 rest of entry unreadable
Mary GREENHILL, Female. 12. Kent
HO107/476 ED1 Folio 8 Page 8
High Street (? unclear if the enumerator has written ditto for the street or something else), Tenterden
Joseph EYULE, Male, 60, Clerk of Union, not born in Kent
Mary EYULE, Female, 60, not born in Kent
Mary EYULE, Female, 30, not born in Kent
Joseph EYULE, Male, 20, Printer, Kent
Rachel GREENHILL, Female, 8, Kent
HO107/476 ED3, Folio 14 Page 20
Regards,
Sharon