Exodus 1:8 - The Popular Commentary by Paul E. Kretzmann

Now there arose up a new king over Egypt which knew not Joseph. The expression "arose up" indicates either that the new Pharaoh adopted entirely new policies with reference to the strange people within the boundaries of his land, or that a new dynasty was founded by conquest or by the overthrow of that which had been friendly to the people of Joseph, the savior of Egypt. This new Pharaoh knew not Joseph, either because he was entirely unfamiliar with the history of the strange people in Goshen, or because he determined to set aside the high regard in which the strangers had been held. A careful comparison of Biblical and secular history seems to show that Thothmes I must have been the Pharaoh of the oppression, while the Pharaoh of the Exodus was Amenhotep II.