Wheea behight thee? = What is your name/to whom do you belong?
To command; to order.
From Middle English beheten, behoten (preterit behighte), from Old English behātan (“to promise, vow, pledge oneself, threaten”) (preterit behēhte), corresponding to be- + hight. Cognate with Scotsbeheit, behecht (“to promise, vow”), Middle High German beheizen (“to promise”).
English Wiktionary. Available under CC-BY-SA license.