Names like Agatha and Edith and Florence are coming around again in kids, because they were popular around the 1920s and so the generation who had them are mostly now all dead.

Which means the names are once more free from expectations and 'available'.

If you name a child something that had a huge burst in popularity only sixty or seventy years ago however, the holders of the name are generally still alive and almost all old, so it still has a strong connotation of being an "old-person name"

So yeah. Old names become new and fashionable again if you wait. But the trick is to wait long enough.