John Wesley on Nehemiah 2:10

Horonite - So called either, from the place of his birth or rule, which is supposed to be Horonaim, an eminent city of Moab. The servant - So called probably from the condition from which he was advanced to his present power and dignity: which also may be mentioned as one reason why he now carried himself so insolently, it being usual for persons suddenly raised from a low state, so to demean themselves.