Historically Rare:
* Aelwyn: Meaning "elf-friend" or "fair elf," this name is steeped in Anglo-Saxon history.
* Eadgyth: A powerful, regal name meaning "prosperous in war," referencing the Anglo-Saxon princess Eadgyth.
* Gwendaline: A timeless classic, meaning "white wave," but less common than its close cousin, Gwendolyn.
* Elfrida: Meaning "elf counsel," this name has a unique charm.
* Wren: A charming nature name, reminiscent of the tiny bird.
* Beatrix: Meaning "she who brings happiness," this name has literary roots.
Modernly Less Popular:
* Rosalind: A graceful name meaning "beautiful rose."
* Juliet: A classic Shakespearean name with a romantic feel.
* Celia: Meaning "heavenly," it has a sophisticated air.
* Cordelia: A Shakespearean name meaning "heart's desire."
* Imogen: Meaning "maiden," it has a lyrical and exotic feel.
Unique and Original:
* Bryony: A nature name meaning "bramble."
* Elowen: A Welsh name meaning "light," but with an English sound.
* Seraphina: Meaning "fiery ones," it has a strong, angelic vibe.
* Genevieve: Meaning "white wave," it's a beautiful and sophisticated name.
* Isadora: A name with Greek roots, meaning "gift of Isis."
Remember:
* This is not an exhaustive list, and there are many other beautiful and rare English girl names.
* The "rareness" of a name is subjective and can change over time.
* It's important to choose a name that resonates with you and your family.
I encourage you to research further and discover names that are truly unique and special for your little one!