1Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (London: St. Catherine Press, 1910.), 2:11, Los Angeles Public Library, 929.721 C682.
2Richardson, Douglas, Magna Carta Ancestry: A Study in Colonial and Medieval Families (Baltimore: Genealogical Publishing Co., 2005.), p. 45, Family History Library, 942 D5rdm.
3Wrottesley, George, Pedigrees from the Plea Rolls (London: Harrison, 1905. FHL BRITISH Film #990,070 Item 1.), p. 59, Family History Library.
1Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (London: St. Catherine Press, 1910.), 2:11, Los Angeles Public Library, 929.721 C682.
1Saul, Nigel, Death, Art, and Memory in Medieval England: The Cobham Family and Their Monuments, 1300-1500 (Oxford, U.K.: Oxford University Press, 2001.), p. 200, UCLA Library, NB1842 .S28 2001.
2Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (London: St. Catherine Press, 1910.), 2:11, Los Angeles Public Library, 929.721 C682.
3Horrox, Rosemary, The De la Poles of Hull (Beverly, Yorkshire: East Yorkshire Local History Society, 1983.), Family History Library, 929.242 A1 no. 190.
4Cokayne, G., CP, 12 (1): 434.
1Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (London: St. Catherine Press, 1910.), 2:11, Los Angeles Public Library, 929.721 C682.
1Sanders, Ivor John, English Baronies: A Study of Their Origin and Descent, 1086-1327 (Oxford: Clarendon Press, 1960.), p. 136, Los Angeles Public Library, 929.722 S215.
1Clagett, Brice McAdoo, Seven Centuries: Ancestry of John Brice de Treville Clagett and Ann Calvert Brooke Clagett for 20 Generations (Friendship, Maryland: Clagett, 2008.).
1Clagett, Brice McAdoo, Seven Centuries: Ancestry of John Brice de Treville Clagett and Ann Calvert Brooke Clagett for 20 Generations (Friendship, Maryland: Clagett, 2008.).
1Clagett, Brice McAdoo, Seven Centuries: Ancestry of John Brice de Treville Clagett and Ann Calvert Brooke Clagett for 20 Generations (Friendship, Maryland: Clagett, 2008.).
2Paul, James Balfour, The Scots Peerage (Edinburgh: D. Douglas, 1904-14.), 2:136-137, Los Angeles Public Library, 929.72 P324.
3Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (London: St. Catherine Press, 1910.), 3:57, Los Angeles Public Library, 929.721 C682.
1Paul, James Balfour, The Scots Peerage (Edinburgh: D. Douglas, 1904-14.), 2:137, Los Angeles Public Library, 929.72 P324.
2Cokayne, George Edward, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct, or Dormant (London: St. Catherine Press, 1910.), 3:57, Los Angeles Public Library, 929.721 C682.
1Clagett, Brice McAdoo, Seven Centuries: Ancestry of John Brice de Treville Clagett and Ann Calvert Brooke Clagett for 20 Generations (Friendship, Maryland: Clagett, 2008.).
2Paul, James Balfour, The Scots Peerage (Edinburgh: D. Douglas, 1904-14.), 2:135-136, Los Angeles Public Library, 929.72 P324.
1Clagett, Brice McAdoo, Seven Centuries: Ancestry of John Brice de Treville Clagett and Ann Calvert Brooke Clagett for 20 Generations (Friendship, Maryland: Clagett, 2008.).
1Burke, Sir John Bernard, A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire (London: Pall Mall, 1883.), p. 271, Family History Library, 942 D22bug 1883.
2Burke, John, A Genealogical and Heraldic History of the Commoners of Great Britain and Ireland (London: H. Colburn, 1835-38.), 4:730, Los Angeles Public Library, 929.725 B959-1 1835-1838.
1Clagett, Brice McAdoo, Seven Centuries: Ancestry of John Brice de Treville Clagett and Ann Calvert Brooke Clagett for 20 Generations (Friendship, Maryland: Clagett, 2008.).
1Richardson, Douglas, Plantagenet Ancestry: A Study in Colonial and Medieval Families (Baltimore: Genealogical Publishing Company, 2004.), p. 219, Family History Library, 942 D5rd.
2Richardson, Douglas, Magna Carta Ancestry: A Study in Colonial and Medieval Families (Baltimore: Genealogical Publishing Co., 2005.), p. 222, Family History Library, 942 D5rdm.
1Richardson, Douglas, Plantagenet Ancestry: A Study in Colonial and Medieval Families (Baltimore: Genealogical Publishing Company, 2004.), p. 219, Family History Library, 942 D5rd.
2Richardson, Douglas, Magna Carta Ancestry: A Study in Colonial and Medieval Families (Baltimore: Genealogical Publishing Co., 2005.), p. 222, Family History Library, 942 D5rdm.