YA. Main character lives in a small village. One day it is attacked and he is killed. He later comes back as a ghost that only the princess can see. They fall in love.

[Hunter]

Main character lives in a small village. One day it is attacked and he is killed. He later comes back as a ghost that only the princess can see. They fall in love. Might have a blue cover. Help me find this book

[Lobstergirl, au gratin]

Details added to header.

What year did you read this? Author female or male? Set in a fantasy world, or a real location? Any particular time period?

[Kris]

Woven by Michael Jensen?
The Goodreads description seems to match your description.

Advanced search on www.worldcat.org -- Subject: ghost princess | Juvenile | Fiction | Book | English

[Lobstergirl, au gratin]

Hunter, was your book "Woven" or are you still looking?