Ever is a name we first heard via the now grown-up Ever Carradine, daughter of Robert. It's a truly unusual and simple name with an evocative meaning. Milla Jovovich and Paul Anderson chose it for their daughter.
Ever has ties to (primarily male) names in the Scandinavian and Hebrew cultures.
The psychic protagonist of Alyson Noel's YA fantasy novel Evermore is named Ever Bloom.