Father Lucius appeared in the first book of the Young Samurai Series .
Father Lucius is a Portuguese Jesuit priest who works as a missionary on the shores of Japan and acts as Jack's translator and teaches him the language. At first he resents Jack but they soon bond.
He bears and intense dislike of Protestants (which is what the vast majority of English people were at that time), and is suspicious of Jack, suspecting him of possessing the rutter, which the Portuguese value highly.
Father Lucius dies sometime during the first half of the book.
Old catholic priest who knows Portuguese, Japanese, and English.