The first name that comes to mind that fits this vibe is [name_f]Octavia[/name_f]! It’s strong and regal but isn’t associated with a specific royal person
[name_f][/name_f]Other suggestions:
[name_f][/name_f][name_f]Ariadne[/name_f]
[name_f][/name_f][name_f]Genevieve[/name_f]
[name_f][/name_f][name_f]Gwendolyn[/name_f]
[name_f][/name_f][name_f]Theodora[/name_f]
[name_f][/name_f][name_f]Aurelia[/name_f]
[name_f][/name_f][name_f]Seraphina[/name_f]
[name_f][/name_f][name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Evelina[/name_f]
[name_f][/name_f][name_f]Isadora[/name_f]
[name_f][/name_f][name_f]Delphine[/name_f]
[name_f][/name_f][name_f]Vivienne[/name_f]
[name_f][/name_f][name_f]Sabine[/name_f]
[name_f][/name_f][name_f]Adelheid[/name_f]
[name_f][/name_f][name_f]Phyllida[/name_f]
[name_f][/name_f][name_f]Philomena[/name_f]
[name_f][/name_f][name_f]Leona[/name_f]
[name_f][/name_f]Matilda/Mathilde
[name_f][/name_f]Wlhelmina
[name_f][/name_f][name_f]Estelle[/name_f]
[name_f][/name_f][name_f]Magda[/name_f]
[name_f][/name_f][name_f]Claudia[/name_f]
[name_f][/name_f][name_f]Rosamund[/name_f]
[name_f][/name_f][name_f]Augusta[/name_f]