A lovely and logical nn for
Matilda; funny how
Matty is nevertheless the default. I wouldn't use it except as a nn, and I'd need the nn to be something other than
Matty because we had a
Matilda dog who was known as
Matty: wonderful animal, but an animal, and also often referred to as
Matt the Mutt ...
Tilly is light; it floats and dances.