My grandmother’s maiden name was [name]Greta[/name] [name]Frances[/name] [name]Mason[/name], mother-in-law [name]Anne[/name]. Our first daughter is [name]Ada[/name] [name]Valerie[/name].
So [name]Iris[/name] is the only choice that isn’t a family name? I have to admit, it’s my favorite of all and I would probably pick [name]Iris[/name] [name]Mason[/name]. But the [name]Greta[/name] choices do carry more family meaning.
Another vote for [name]Greta[/name] [name]Frances[/name]. It sounds beautiful, and I love that it’s a tribute to your grandmother. It also sounds really nice with your other daughter’s name