Hi this looks to be him with his parents in 1881:-
Valentine Brinkley 55 occ Traveller (Hawker) b Potton, Beds
Sarah 55 b Redbourn, Herts
Henry 3 Grandson Not shown
Valentine 35 occ Traveller b Burnham Green
Rhoda 35 b Oxford
James 4 b Not known
Valentine 2 b Not known
Edward 0 b Not known
Residing Caravan in The Cuffley Road, Northaw, Herts
Census Ref RG11/1427/87/29
Keyboard86
Living in a Cart in Cuffley roadside, alongside the above is:-
Joseph Brinkley 20 occ Traveller b Hertford
Nelly Wife 19 b Redbourne, Herts