 He was given the first name James in honor of his grandfather Jakub Sobieski, while his middle names Louis Henry were a gesture to his godparents, Louis XIV of France and Henrietta Maria of France.Health problems were a constant for James in his youth, and there is a wealth of correspondence exchanged between his parents on the subject.He likely had a spinal deformation, which was likely not very severe because James was known as a good dancer and a proficient equestrian.