Elizabeth Woodville’s marriage to Edward IV produced ten babies in fourteen years. Edward’s own mother, Lady Cecily [Neville], had thirteen children of whom only seven survived to adulthood. Lord Warwick [father of Queen Anne Neville] and Lady Alice FitzHugh’s [great-grandmother to Queen Katherine Parr] mother, Lady Alice, Countess of Salisbury [sister-in-law to Lady Cecily], also gave birth to no less than twelve children herself. So how dangerous was it to have a royal baby in the 15th Century? Historian Dr. Jeremy Goldberg assesses what childbirth would have been like for the White Queen [and other women].
More info on childbirth in Tudor times: Childbearing: Queen Katherine of Aragon and Lady Maud Parr