Probably a bit late now, but 'Arry and 'arryish are both in Chambers - a vulgar jovial Cockney and his accompanying adjective. 'Arriet (as in 'Arman?) is the female equivalent.
Presumably he's one and the same as 'Appy 'Arry, the term my grandparents (who were Londoners) often used in ironic reference to a miserable person.