Rawcliffe 2008. Rawcliffe, Carole (3. januar 2008). "Stafford, Humphrey, first duke of Buckingham (1402–1460), soldier and magnate". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/26207.
Stansfield 2008. Stansfield, M. M. N. (4. oktober 2008). "Holland, Edmund, seventh earl of Kent (1383–1408), magnate". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/13518.
Harriss 2008. Harriss, G. L. (3. januar 2008). "Beaufort, Henry [called the Cardinal of England] (1375?–1447), bishop of Winchester and cardinal". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/1859.
Carpenter 2008. Carpenter, Christine (3. januar 2008). "Beauchamp, Henry, duke of Warwick (1425–1446), magnate". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/1836.
Davies 2011. Davies, C. S. L. (22. september 2011). "Stafford, Henry, second duke of Buckingham (1455–1483), magnate and rebel". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/26204.
Harriss 2011. Harriss, G. L. (19. maj 2011). "Beaufort, John, marquess of Dorset and marquess of Somerset (c. 1371–1410), soldier and administrator". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/1861.
Navnet er anført på engelsk og stammer fra Wikidata hvor navnet endnu ikke findes på dansk.
worldcat.org
Cokayne 1912, s. 389. Cokayne, G. E. (1912). The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom: Extant, Extinct, or Dormant. Vol. 2. London: St Catherine Press. OCLC926878974.
Nicolas 1826, s. 356–357. Nicolas, N. H. (1826). Testamenta Vetusta. Vol. I. London: Nichols & son. OCLC78175058.
Thomas 1997, s. 112. Thomas, H. M. (1997). "An Upwardly Mobile Medieval Woman: Juliana of Warwick". Medieval Prosopography. 18: 109122. OCLC956033208.
Cherry 1981, s. 7, 106. Cherry, M. (1981). The Crown and the Political Community in Devon, 1377-1461 (Afhandling). University of Wales (Swansea). OCLC53569981.
Tait 1898, s. 452–453. Tait, J. (1898). "Stafford, Humphrey, First Duke of Buckingham (1402–1460)". I Lee, S. (red.). Dictionary of National Biography. Vol. 53. London: Smith, Elder & co. s. 451-454. OCLC1070754020.
Cokayne 1959, s. 735. Cokayne, G. E. (1959). The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom: Extant, Extinct, or Dormant. Vol. 12. London: St Catherine Press. OCLC312826326.
Cokayne 1913, s. 355. Cokayne, G. E. (1913). The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom: Extant, Extinct, or Dormant. Vol. 3. London: St Catherine Press. OCLC312790481.