Elmyra's husband died in the Wutai war and happened when Aeris was a young girl, so it couldn't be Angeal.

I don't think it's ever revealed if he even had a wife.

Oh and in the original VII Angeal didn't let Zack out of the chamber in the Shinra basement. In VII Zack attacked a random Shinra employee after he opened it to give Zack some food.