(North Wisconsin,Yooper)Alternative form of James, usually a diminutive, but also occasionally a given name.
2001, Escanaba in da Moonlight:
You see, Da Jimmer has been to outer space and he’s different. Very different.
Usage notes
An odd quality of this name is that it can often take the definite article the (da in Yooper dialects), unlike most English names; i.e., instead of "Go tell Jimmer to mow the lawn," "Go tell the (da) Jimmer to mow the lawn."