 Arthur became Duke of Cornwall at birth . Four days after his birth , the baby was baptised at Winchester Cathedral by the Bishop of Worcester , John Alcock , and his baptism was immediately followed by his Confirmation . John de Vere , 13th Earl of Oxford , Thomas Stanley , 1st Earl of Derby , William FitzAlan , 16th Earl of Arundel , Queen Elizabeth Woodville and Cecily of York served as godparents ; the latter two carried the prince during the ceremony . Initially , Arthur 's nursery in Farnham was headed by Elizabeth Darcy , who had served as chief nurse for Edward IV 's children , including Arthur 's own mother . After Arthur was created Prince of Wales in 1490 , he was awarded a household structure at the behest of his father . Over the next thirteen years , Henry VII and Elizabeth would have six more children , of whom only three – Margaret , Henry and Mary – would reach adulthood . Arthur was especially close to his sister Margaret ( b . 1489 ) and his brother Henry ( b . 1491 ) , with whom he shared a nursery . 
