Dear Newsgroup ~ Complete Peerage 12(1) (1953): 46–48 (sub Somerset) includes a good biography of John Beaufort, K.G., Duke of Somerset (died 27 May 1444), who was the maternal grandfather of King Henry VII of England. Regarding his marriage, the following information is provided by Complete Peerage: "He married, in or about 1442, Margaret, widow of Sir Oliver St. John, sister and heiress of John Beauchamp, daughter of John Beauchamp, of Bletsoe (according to modern doctrine 4th and 3rd Lord Beauchamp of Bletsoe), by Edith, daughter of Sir John Stourton." END Of QUOTE. On page 47, footnote l, the following documentation is given for this marriage: "They had a papal indult to have a portable altar, 8 Kal. [24 June] 1443 (Cal. Papal Letters, vol. ix, p. 368." END OF QUOTE. Fortunately, there is evidence to better indicate when the marriage of John Beaufort and Margaret Beauchamp took place. Calendar of Patent Rolls, 1436–1441 (1907): 559 shows that on 2 August 1441, Margaret, then widow of Oliver Saint John, was granted livery of the dower lands of her late mother, Edith, to have without any inquistions. See the following weblink for this record: https://books.google.com/books?id=v-gLAQAAIAAJ&pg=PA559&lpg=PA559 Elsewhere there is a Common Pleas lawsuit dated 1442 in which John Beaufort and Margaret Beauchamp, then husband and wife, are the plaintiffs. An abstract of the lawsuit is found below. In Hilary term 1442 John, Earl of Somerset, and his wife, Margaret, sued John Sharp, Gent., of Worcester, Worcestershire in the Court of Common Pleas regarding a debt of 20 marks. Reference: Court of Common Pleas, CP40/724, image 39f (available at http://aalt.law.uh.edu/AALT1/H6/CP40no724/aCP40no724fronts/IMG_0039.htm). A related entry is Court of Common Pleas, CP40/724, image 1836d (available at http://aalt.law.uh.edu/AALT1/H6/CP40no724/bCP40no724dorses/IMG_1836.htm). Hilary term 1442 fell beween 23 January and 12 February. Reviewing the above, we see that John Beaufort and Margaret Beauchamp were married after 2 August 1441 and before Hilary term [23 Jan./12 Feb.] 1442, roughly a six month window of time. Best always, Douglas Richardson, Salt Lake City, Utah