Thine in example sentence
"By Our Blessed Lady," said Wilfred, "if it be not a sin to name her here, it is no time for me or any true knight to be bedridden; and if thou accomplish thy promise, maiden, I will pay thee with my casque full of crowns, come by them as I may.""I will accomplish my promise," said Rebecca, "and thou shalt bear thine armour on the eighth day from hence, if thou will grant me but one boon in the stead of the silver thou dost promise me.""If it be within my power, and such as a true Christian knight may yield to one of thy people," replied Ivanhoe, "I will grant thy boon blithely and thankfully."