Well, Mor, where have you been this long while? (Norfolk). I'sy, Mor, come hither! (Norfolk). Mor or Morther means a lass, a wench. It is the Dutch moer (a woman). In Norfolk they call a lad a bor, from the Dutch boer (a farmer), Englishboor. “Well, bor!” and “Well, mor!” are to be heard daily in every part of the country.
When once a giggling morther you, And I a red-faced chubby boy, Sly tricks you played me net a few, For mischief was your greatest joy
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894