The Falconer's Apprentice

"That bird should be destroyed!"
Andreas stared at Ethelbert in shock. Blood from an angry-looking gash on the young lord's cheek dripped onto his embroidered tunic. Andreas clutched the handles of the basket containing the young peregrine. Perhaps this was a dream-
Andreas, an apprentice falconer at Castle Kragenberg, cannot bear the thought of killing the young female falcon and smuggles her out of the castle. Soon he realizes that his own time there has come to an end, and he stows away, with the bird, in the cart of an itinerant trader, Richard of Brugge. So begins a series of adventures that lead him from an obscure castle in northern Germany to the farthest reaches of Frederick von Hohenstaufen's Holy Roman Empire, following a path dictated by the wily trader's mysterious mission.
Andreas continues improve his falconry skills, but he also learns to pay attention to what is happening around him as he travels through areas fraught with political unrest. Eventually, Richard confides in Andreas, and they conspire to free Enzio, the eldest of the emperor's illegitimate sons, from imprisonment in Bologna.