I recall that Bogdanovich somewhere writes (I think it is in the introduction to the paperback version of This is Orson Welles) that Welles was raised Catholic. I think I tried to see if this fact was corroborated by any of the Welles bios, and I think I found that none of them discussed his religious upbringing. And I seem to remember that the Higham bio gave information suggesting he was not raised Catholic.
Does anyone know if any of the bios (or any other source) disscuss this?

