Moses is not mention in the Haggadah because we are supposed to focus on HaShem and what He did for us.
Wrong. He is mentioned once. The reason why he's not mentioned more than that is in order to give thanks to God, not to a human.
Moses is never directly mentioned in the Haggadah.
sally was nick named moses
Fredrick Douglas was named after the Black Moses
No Moses Austin did not have siblings. He did have a daughter named Emily Perry and a grandson named Moses Bryan.
The biblical Moses had a brother named Aaron.
The biblical Moses had a brother named Aaron.
It is not known for certain who authored the Haggadah.
Aaron
Yes, Moses was married to a woman named Zipporah.
Moses named his two sons Gershom and Eliezer.
Moses had two sons. He and his wife named them Gershom and Eliezer.
The Haggadah contains the service for the seder.