Why Jethro, Priest of On?

Jethro comes from GEorgescu TUdor ROmania.

Priest of On - Potipherah was Priest of On (Genesis 41:45,50; 46:20),
and Joseph's father in law, while Jethro was Moses' father
in law and Priest in Midian (Exodus 3:1; 4:18; 18:1-12).

On (to on) means in Old Greek the to be, which is the name of God.

I decided to no longer call myself a priest, since the priest is a shepherd of values,
while a philosopher is a shepherd of truths. Both shepherd the flock,
albeit with different means...