I really love [name_f]Adelaide[/name_f], [name_f]Margot[/name_f] and [name_f]Josephine[/name_f] as a set and so there are many other classic or vintage possibilities. I would include [name_m]Oscar[/name_m] in that list.
[name_f][/name_f][name_m]Abram[/name_m] and [name_m]Jethro[/name_m] is a very handsome pair. [name_f]Susannah[/name_f] is great too with it too.
[name_f][/name_f][name_f]Magnolia[/name_f], [name_f]Pearl[/name_f] and [name_m]Oscar[/name_m] is another one I like. [name_f]Susannah[/name_f] would be a nice addition.
[name_f][/name_f][name_m]Not[/name_m] so keen on [name_m]Jethro[/name_m], [name_f]Edith[/name_f] and [name_f]Agatha[/name_f] as the girls seem so prim and proper next to [name_m]Jethro[/name_m] which reads rugged and laid back by comparison (probably thay ‘ro’ ending sound). I would go with something like [name_m]Arthur[/name_m], [name_m]Matthew[/name_m], [name_m]Thaddeus[/name_m] if going with ‘th’ sound.