tyke n.

late 14c., "cur, mongrel," from a Scandinavian source akin to Old Norse tik "bitch," from Proto-Germanic *tikk- (source also of Middle Low German tike). Also applied in Middle English to a low-bred or lazy man. The meaning "child" is from 1902, though the word was used in playful reproof from 1894. As a nickname for a Yorkshireman, from c. 1700; "Perhaps originally opprobrious; but now accepted and owned" [OED].