Originally posted by: Targaryen-gal
Also regarding rhae-lya theory, the mystery knight could possibly be lya as she had earlier saved howland reed and the mystery knight too defended him at the tourney.
Also aerys had sent rhae after the mystery knight but he came back only with a shield of the knight. The knight was small, not like a huge man more of a woman...so rhaegar was protecting lyanna, who was the mystery knight.