Glenda

A name created in the 20th century from the Welsh elements glân "pure, clean" and da "good" [1].

classic   mature   formal   upper class   natural   wholesome   refined   strange   simple   serious  

chastity, currently out of the US top 1000, Discworld characters, invented, pure, purity, virtues

1. Hanks, Patrick and Flavia Hodges. A Dictionary of First Names. Oxford, 1990, page 137.