"... Charles [Karl I. Stuart], Duke of Albany - had been born at Dunfermline, but he had been so delicate that he had been baptized hurriedly the same day (am 19. November 1600)." (in: Carola Oman: Elizabeth of Bohemia. London 1964 (revised edition), p. 5). Karl blieb immer das Sorgenkind seiner Eltern. "On his first arrival in England [in 1604], the appearance of the second son of their new sovereign had shocked many ladies and gentlemen ... 'When they saw how weak a child he was and not likely to live, their hearts were down.' But bold Sir Robert Carey's equally bold lady had undertaken the charge, and scouted James's suggestion that the string of Charles's tongue ought to be cut, and he must put in iron boots. At nine Charles's legs were not yet quite straight, and he showed no signs of losing his stammer, which was far more pronounced than that of his elder brother. But he had, to everyone's surprise, grown into a most active and demonstrative little boy, with bright golden hair and sapphire-blue eyes. His delighted parents spoilt him as much as possible." (in: Carola Oman: Elizabeth of Bohemia, id., p. 43).
"In the summer of 1604, the young Prince Charles, being sickly and rickety, was brought to England, and, by the Queen’s desire, placed under the care of Lady Carey, the wife of Sir Robert Carey … The Prince, when he arrived in England, was between three and four years old, and in a miserably crippled state, but, under the judicious management of Lady Carey, he daily gained health and strength; and, at last, to the infinite joy of his parents, walked, prattled, and played with ease and sprightliness. On Twelfth Day [6. Januar], 1605, he was formally created Duke of York." (in: Francis Lancelott: The Queens of England and their Times, Volume II, id., pp. 665-666).