Green’s Dictionary of Slang

kivey n.

also kiver
[presumably a dimin. of cove n., though poss. linked to Lat. civis, a citizen]

a man.

[UK] ‘The good old days of Adam and Eve’ in Holloway & Black II (1979) 218: Along the streets they roll ye / In a chaise with a kiver, called Cabri-oley.
[UK]‘Cuthbert Bede’ Adventures of Mr Verdant Green (1982) II 166: There’s a squelcher in the bread-basket, that’ll stop your dancing, my kivey!