What about using your Grandmother’s name as a middle name? You would still be honouring Grandma [name]Gwendolyn[/name] but you could use a first name that actually works with [name]Noa[/name] & [name]Rorie[/name].
Suggestions:
[name]Willa[/name] [name]Gwendolyn[/name] - [name]Noa[/name], [name]Rorie[/name], and [name]Willa[/name] Kenison
[name]Peyton[/name] [name]Gwendolyn[/name] - [name]Noa[/name], [name]Rorie[/name], and [name]Peyton[/name] Kenison
[name]Emery[/name] [name]Gwendolyn[/name] - [name]Noa[/name], [name]Rorie[/name], and [name]Emery[/name] Kension
[name]Isis[/name] [name]Gwendolyn[/name] - [name]Noa[/name], [name]Rorie[/name], and [name]Isis[/name] Kension
[name]Tate[/name] [name]Gwendolyn[/name] - [name]Noa[/name], [name]Rorie[/name], and [name]Tate[/name] Kension
[name]Erica[/name] [name]Gwendolyn[/name] - [name]Noa[/name], [name]Rorie[/name], and [name]Erica[/name] Kension
[name]Lena[/name] [name]Gwendolyn[/name] - [name]Noa[/name], [name]Rorie[/name], and [name]Lena[/name] Kension
[name]Lila[/name] [name]Gwendolyn[/name] - [name]Noa[/name], [name]Rorie[/name], and [name]Lila[/name] Kension
If not I would just use [name]Gwen[/name]. As she honours [name]Gwendolyn[/name] in the first name slot, but [name]Gwen[/name] works far better with [name]Noa[/name] and [name]Rorie[/name] due to the names being really short and have a spunky feel. I think the names work well together.