I haven't read it since I was a teenager, but Elizabeth Gouge's Green Dolphin Street, (my twenty year old memory recorded the book as the Island of the Green Dolphin, but wikipedia tells me it's Green Dolphin Street) has a young man writing from New Zealand back to the Channel Islands to ask for his beloved's hand in marriage, but get the wrong sisters name. When she turns up in New Zealand he just sort of shrugs and makes the best of it.