Question about Alloy of Law religion(s)

I just finished AOL and while reading it was wondering— do the people in era 2 know that Ironeyes and The Survivor were (are?) brothers? I was just mildly curious about this and then got to the epilogue where Ironeyes/Marsh meets Marasi and tells her that Wax is doing his brother’s work and now I’m very curious. Does Marasi know who Ironeyes’ brother is? My guess is that this would be common knowledge since Sazed/Harmony knows and he passed his knowledge on to everyone?