Cecil Sharp's Note 29 (1916)
No. 29. The Death of Queen Jane
For other versions see Child (No. 170) and the Journal of the Folk-Song Society (volume ii, p. 221; volume iii, p.67).
Queen Jane Seymour gave birth to Prince Edward, afterwards Edward VI, on October 12, 1537, and died twelve days later. There is no evidence that hear death was brought about in the way narrated in the ballad.