The wife of Moses (Num. 12:1). It is supposed that Zipporah,
Moses’ first wife (Ex. 2:21), was now dead. His marriage of this
“woman” descended from Ham gave offence to Aaron and Miriam.
Smith's Dictionary
The wife of Moses is to described in (Numbers 12:1) She is elsewhere said to have been the daughter of a Midianite, and in consequence of this some have supposed that the allusion is to another wife whom Moses married after the death of Zipporah.