Which series? I read 'The Sharing Knife', in which the main character is named Fawn. She's quite a badass, so I don't feel it's ditzy."Find what you love, and let it kill you." Charles Bukowski
If I remember correctly, it was called "The Christian Heritage Series." It traced the heritage of a family, the Hutchinson's, from the late 17th century to the Second World War (the ones featuring Fawn were during the WWII years).