Complete Peerage states, [1]
John de Botetourt, whose parentage is unknown, was a distinguished soldier; Gov. of St. Briavel's Castle, co. Gloucester, 1291; Adm. for the Northern Seas 1294-97, and again 1315. He was one of the Barons who signed the letter to the Pope in 1301, and was sum. to Parl. from
13 July (1305) 33 Edw. (b) to 13 Sep. (1324) 18 Edw. 11, by writs directed Johanni Botetourt, whereby he may be held to have become Lord Botetcourt.(c) Gov. of Framlingham Castle, 1314. He joined in the rebellion of Thomas, Earl of Lancaster, and fought at Boroughbridge, 16 Mar. 1321/2,(d) for which he was fined £1,000, and was pardoned 8 Oct. 1322. He m., probably soon after 1 July 1285, when she was a minor,(e) certainly before June 1292, Maud, sister and h. of Otes Fitz Thomas, being da. of Thomas Fitz Otes, of Mendelsham, Suffolk, by Beatrice, 3rd da. and coh. of William de Beauchamp, feudal Lord of Bedford. He d. 25 Nov. 1324.(a) His widow was living 28 May 1329.(b) For a list of the only recognised Parliaments (down to 1500) which furnish a date of origin for baronies by writ now (1911) existing, see vol. vi. Appendix G. V.G.
(c) As to how far these early writs of summons did in fact create any Peerage title, see Appendix A in the last volume. V.G.
(d) For an account of this battle see Appendix C to this volume.
(e) Add. Chart., no. 30,990.
(a) J. H. Round writes, "The whole of his lands were found (Dec. 1324) to have been held in right of his wife, who brought him a third of the barony of Bedford; but she settled this in 1328 on her daughter, Elizabeth, wife of William, Lord Latimer." V.G.
Douglas Richardson states, [2]
After years of searching, conclusive evidence that Sir John Botetourt is the son of Sir Guy Botetourt has been found in a Justices Itinerant lawsuit dated 1326, which includes specific testimony that in 12 Edward II [1318–19] John Botetourt granted John de Wysham lands and tenements in Wood Rising, Norfolk, which formerly belonged to his father, Guy Botetourt [see Justices Itinerant, JUST 1/1393A, image 34f; Date: 1326 (available at http://aalt.law.uh.edu/E2/Just1no1393A/aJUST1no1393Afronts/IMG_0034.htm)].
[1] George E. Cokayne, Vicary Gibbs, ed., The Complete Peerage of England Scotland Ireland Great Britain, Vol. 2, Bass to Canning (London, St. Catherine Press, 1912), 233, [InternetArchive].
[2] Newsgroup Post, soc.genealogy.medieval, Douglas Richardson, "C.P. Addition: Parentage of Sir John Botetourt, 1st Lord Botetourt [died 1324]," September 26, 2018, [GoogleGroups_SGM].