I would only use the same letter if I had a boy and a girl.
Tamsyn and
Tom (both mean twin co-incidentally)
Adelaide and
AlexanderAnya and
AidanBryony and
BenjaminFrances and
FraserFreya and
FinnJessamine and
JacobKeir and
Keira ?! Probably not but I like both names. Maybe as middle names.
Louisa and
LucasNadia and
NicholasRosanna and
RorySienna and
Sean
My great granddad was a twin. They were
Alfred and
Agnes. For some reason I've had this twinset in my head:
Ashlyn and
Aidan