What is "measter"

Usage examples of "measter".

Ah, doan't 'ee nip our tender vitals, lovely Measter Brock, for ee wor a proper gennelman, ee wor, and brought us up full comely on cow's milk an' that, all supped out from a lordly dish.

Now my poor gennelman, Measter Mearn, they was allars a-rushing arter his ankels, with their yik-yik-yik, when they wanted to be fed like, those what ee kept from liddles — and, holy church, how ee would scream!