According to corkslang.com, caffler is a noun meaning a young rogue, an impish, saucy young fellow, an
impertinent boy. It is used around Cork city in Ireland.
It
probably derived from French 'caviller'.
That fellow is a caffler.
' . . . . I
rocked that
little caffler in his cradle.' (Murphy)
'Young cafflers would come after me along the Mardyke calling me names.' (
O'Mahony)