I too loved Persephone but DH vetoed it. DD has another unusual (not made up!) name - not met another one but have read of a few. Can't give you the name here as I would out myself.
When DD was younger she loved the name Seraphina and asked me why I hadn't called her that. TBH if I'd heard of the name I might have done but I only came across it in The Lion King.
Also liked Charlotte but decided against it (Charlotte the harlot), Xerxes for a boy ( a huge look of horror from DH), and Scarlett. Also loved Georgia and Grace but they don't go with our surname.
Don't worry about people not being able to pronounce/spell it - they'll get it eventually. DD was probably the last of her friends to be able to pronounce her own name correctly and definitely the last to be able to spell it - but it was all sorted by the time she went to school. Her name is constantly spelt incorrectly, even by school mums who've known her for ages, but I just smile sweetly and correct it. When people meet her I often get comments on how lovely her name is. - and everyone remembers her.
Also whatever name you give, your child will grow in to it. When we told everyone her name my sister said she doesn't look like an X - but within a couple of months said OMG I was so wrong she is such an X - I think partly because there are so few others - the name belongs to her.
Good luck with whatever you decide and with the rest of the pregnancy.