I’ve been researching the Exodus of Israel from Egypt, and also trying to establish the route of the exodus. Also, I’ve been looking for the time Joseph the son of Jacob came to prominence in Egypt. I feel satisfied that I have narrowed the time periods of both to acceptable ranges.
I believe that Joseph’s Pharaoh was actually two pharaohs. The first pharaoh was Senusret II, during the 12th dynasty of the Middle Kingdom of Egypt. During this time, co-regency was accepted and practiced commonly. Seeing how Joseph was made co-regent after giving pharaoh the interpretation of his dream, this fits the Bible account. Also, the time of Senusret II is within the time period described by the Bible as 480 years before Solomon’s temple (1 King 6:1) plus 430 years before Exodus (Exodus 12:40-41) plus the life of Joseph before coming to power in Egypt. That’s over 910 years before Solomon’s temple.