Is Araminta upper class and Antonia an upper middle class name?
I quite like Antonia but it conjures up an overweight, dandruffy, late middle aged slightly ruddy faced Sloane to me. Someone who helps out in a stately home is is very knowledgeable in the decorative arts. Probably a bit horse faced and sour breathed with the beginnings of whisker on her chin. So not a overly positive image then :)
And Araminta I love, but how could I use it? How can anyone use it without looking like a berk unless they own half of Gloucestershire?