A question about the novel Sons and Lovers
" An' I'aven't-- that I'aven't. You b'lieve me, I've 'ad very little this day. I have an'all." His voice went tender. "Here, an' I browt thee a bit o'brandysnap, an' a cocoanut for th' children." He laid the gingerbread and the cocoanut, a hairy object, on the table," Nay, tha niver said thankyer for nowt i'thy life, did ter?"
Why are the father's words so weird? Do they mix some old English or something else?
Thanks for your help