I too do not understand the hard-on the world has for
Adelaide these days. I like that it's old-school and unexpected, but it has such an odd sound, like "addle-aid".
Adeline is a nice choice. It has the old-fashioned feel of
Adelaide but with the classiness of
Caroline. I like
Adeline Susannah myself - it really complements that Southern dust-bowl chic. It reminds me of permanent waves and strings of pearls and flowered aprons.