Share 'Jane Beaufort's Parentage'

There has been some contention, for generations, as to whether or not Henry de Beaufort (1375-1447), son of John of Gaunt, had an affair with Alice Fitzalan and fathered Jane Beaufort (1402-1455) or not. Some sources contend that there is no evidence for this, while others assert that Jane's father was Henry de Beaufort. I am trying to find out, then, who Jane's father was, assuming the story of…