Green’s Dictionary of Slang

a generic term for a Welshman.

1691		‘A New Medley’ in Ebsworth Merry Drollery Compleat (1875) 335: Let not poor Teg and Shone / Vender from der houses.
1719		in D’Urfey Pills to Purge Melancholy II 78: Hot pated Shone cry’d splut and look’d pig.