Poem From A Pirate is the second quest given by the Sea Scholar. It is the second quest of the Sea Scholars's Guild questline, and unlocks the second tier of items to purchase from the Sea Scholar upon completion.
I'd like you to get another book for me. Well, actually this one is more of a poem. My information tells me that the book is currently in possession of a Pirate Captain. Not sure how a Captain would come into one of these poems, nor why he would care. Maybe he has a soft spot?
At any rate, find a Pirate Captain and see if he has the book I want. It's called Castles on the Hill. Bring it to me when you're done.