Ginevra

"Ginevra" means the city and canton "Geneva" (Switzerland) in Italian. But it is a fact that "Geneva" is also the name of a city situated in Ontario County, New York, USA. [noted -ed]

Ginevra is really Gaelic in meaning. It means "White Wave". It does derive from the French name, Genevieve. Ginevra was probably formed when the Normans came over to England/Scotland from Normandy.

There is also a myth about a girl named Ginevra. On the day of her wedding, she hid in the hollow of a tree and was trapped inside. It wasn't until later that they found her skeleton hidden inside of the tree. On the Lexicon, it has been hypothesized that this may have been why Ginny was named as she was (after all, her body was supposed to lie in the Chamber of Secrets forever). Rowling denies this; she says she just wanted Ginny to have a very interesting and different name.

Are you sure that it isn't Meinir you are thinking about? She is the girl who hid in a tree on her wedding day, and her skeleton was found there. Go to my comment on Meinir to see the fable.