Definition of "hez"

He's here with some of his folks az hez got inter trouble--I'm forgettin' to tell ye.

1896, Bret Harte, In a Hollow of the Hills‎

"Well, then, you c'n explain it to them as hez ben to high school, an' that's sister Phoebe.

1904, Harold Steele Mackaye, The Panchronicon‎

Jim was visibly excited; he let go the telephone, and, turning around, full over against us, he said, "By ----, boys! the stage hez been robbed!"

1911, Eugene Field, Second Book of Tales‎