The Door in the Wall by Marguerite de Angeli, Yearling Newbery Award winner 1949 Summary:

The Door in the Wall by Marguerite de Angeli, Yearling Newbery Award winner 1949

Summary:

This is a story, set in Medieval England, of a young boy, Robin, who gets separated from his parents, and at the same time is taken by a crippling illness.
With the help of some friars who take him under their care, he learns to deal patiently with his disability. Robin is also taught to strive, with a sincere love of neighbor, to do his best for the common good. After many exercises and much attention, he gains the strength to walk with crutches. But the wise friar knows that a strong body is not enough. Little by little, Robin’s mind and soul are given a healthy workout. The friar constantly teaches Robin that without the use of his legs he can still do many things that merit honor and praise. He learns through the guidance of Brother Luke that a willing heart and a pure mind can perform good deeds. This boy truly strives for perfection once he is set on the right path.
This book takes on more of an adventurous flavor in the second half, as the boy, one monk, and a minstrel make a journey to a castle and end up by helping to save the place from an attacking army. At the end of the story, the boy is reunited with his parents.