I know this thread is old, but the topic comes up regularly. I’m currently reading the biography of [name]Georgiana[/name], Duchess of Devonshire (subject of the film, “The Duchess”) and it has this to say regarding her name pronunciation: The Cavendish way of doing things stampted itself on all members of the family from…to the peculiar drawl which marred their speech. They pronounced her name “[name]George[/name]-aina” (as in rain-a), as opposed to [name]George[/name]-i-ahna. In her eagerness to be accepted [name]Georgiana[/name] adopted all their mannerisms, vigorously applying the Cavendish drawl and insisting that everyone should call her “[name]George[/name]-ayna.” This was how she became known for the rest of her life. (p.29)
Interesting how a name gets tweaked, no? I still prefer the [name]George[/name]-i-ahna pronunciation.