In re-reading through Exodus I came across 2 people that are called Moses' father-in-law Exodus 2:18-21 states it is Reuel:
2:18 So when they came home to their father Reuel... 2:21 Moses agreed to stay with the man, and he gave his daughter Zipporah to Moses in marriage.
But a little later in chapter 3 it says his father-in-law is Jethro
3:1 Now Moses was shepherding the flock of his father-in-law Jethro, the priest of Midian...
So which one? In the second scripture the word חתנו (khaw-than') is used and when I did a Strong's search it said
1) to become a son-in-law, make oneself a daughter's husband 1a) (Qal) wife's father, wife's mother, father-in-law, mother-in- law (participle) 1b) (Hithpael) to make oneself a daughter's husband
But in chapter 2, Reuel gave Zipporah to Moses in marriage. Is it possible Mosses had an additional wife that is not named? If he had an additional wife and father-in-law, why did he only ask Jethro permission to return to Egypt, and not Reuel?
4:18 So Moses went back to his father-in-law Jethro and said to him, “Let me go, so that I may return to my relatives in Egypt and see if they are still alive.” Jethro said to Moses, “Go in peace.”