Gwen Susanna is alright, but I'd prefer a different mn actually. I like:
Gwen Olivia
Gwen Elizabeth
Gwen Talitha
Gwen Isabella
Gwen Phoebe
Gwen Lilia
Gwen Liliana
Gwen Hazel
Gwen Sabrina
Gwen Sadie
Gwen Audrey
Gwen Arielle
Gwen Charlotte
Gwen Celeste
Gwen Bianca
Gwen Veronica
Gwen Michaela
Gwen Matilda