Nobility: England, Ireland, Wales

Anthony Tuck, Master of Collingwood College, Lecturer in History at the Univ of Durham, wrote Crown and Nobility, 1272-1461, a most readable and knowledgable analysis of the power struggles of that era. It's no longer available; so I recommend what you may yet find of Tuck's work:
War and Border Societies in the Middle Ages tracking
Anthony Goodman, Anthony Tuck / Hardcover, 208 pages / Routledge, an imprint of Taylor & Francis Books Ltd, Sep 1992
War, Politics and Culture in Fourteenth-century Englandtracking
James Sherborne, Anthony Tuck / Hardcover, 224 pages / Hambledon Press, Feb 1994
Monarchy, Magnates and Institutions in the Anglo-Norman Worldtracking
C. Warren Hollister / Hardcover / Published 1986
An important set of essays, highly recommended.
Rolls of Arms of Edward I (1272-1307): Aspilogia IIItracking
Gerard J. Brault / Hardcover / Published 1997
Women of the English Nobility and Gentry, 1066-1500tracking
Jennifer Ward / Paperback / Published 1995
Translations of charters and deeds illustrating their lives. Includes Badlesmere, Bohun and others of interest to many genealogists.Our Price: £14.99 Probably available within a month.
Law, Land, & Family : Aristocratic Inheritance in England, 1300 to 1800 (Studies in Legal History)tracking
Eileen Spring / Paperback / Published 1997
The Nobility of Later Medieval Englandtracking
K. B. McFarlane, J. Campbell / Paperback / Published 1980
The English Nobility in the Late Middle Agestracking
Chris Given-Wilson / Paperback, 240 pages / Routledge, an imprint of Taylor & Francis Books Ltd, Sep 1996
English Nobilitytracking
Richard Hoyle / Hardcover / Published Apr 1999
Paperback edition:tracking
Nobility of North West England: A Historytracking
John Burgess / Paperback / Published 1989
Declaration of Arbroath : A Letter from the Nobility, Barons and Commons of Scotland, in the Year 1320tracking
Bernard De Linton / Paperback / Published 1997
Dictionary of British Arms : Medieval Ordinary: v.1 Ed. H Chesshyre & T Woodcocktracking
Hubert Chesshyre / Hardcover / Published 1992
Dictionary of British Arms : Medieval Ordinary: v.2 Ed. T Woodcock, etctracking
Thomas Woodcock / Hardcover / Published 1996
Bibliotheca Heraldica Magnae Britanniae : Bibliography of Heraldry, Genealogy, Nobility, Knighthood and Ceremonies from 1469 to 1821tracking
Thomas Moule / Hardcover / Published 1966
Aspects of Aristocracy : Grandeur and Decline in Modern Britaintracking
David Cannadine / Hardcover / Published 1994
John Donne and the Ancient Catholic Nobilitytracking
Dennis Flynn / Hardcover / Published 1995
History, Topography and Antiquities (Natural and Ecclesiastical), with Biographical Sketches of the Nobility, Gentry and Ancient Families, and Notices of Eminent Men, etc. of the County and City of Waterford : Including the Towns, Parishes, Villages, Manors and Seatstracking
Joseph Hansard, Donald Brady / Hardcover / Published 1997
Heraldry for the Local Historian and Genealogisttracking
Stephen Friar / Paperback / Published 1996
Or and Argenttracking
Bruno Bernard Heim, Duke of Norfolk / Hardcover / Published 1994
An Outline of Heraldrytracking
Robert Innes-Smith, the Duke of Norfolk / Paperback / Published 1990
Brewer'sBritish Royaltytracking
David Williamson / Hardcover / Published 1997
The Dukes of Norfolktracking
John Martin Robinson / Paperback / Published 1995
The Oxford Illustrated History of the British Monarchytracking
John Cannon, Ralph Griffiths / Paperback / Published 1998
Great Irish Houses and Castlestracking
Jacqueline O'Brien, Desmond Guinness / Hardcover, 264 pages / Abrams, Sep 1992
Great Irish Houses

Nobility:  France   -   and Chivalry

France in the Middle Ages : 987-1460 : From Hugh Capet to Joan of Arc (A History of France)tracking
Georges Duby, Juliet Vale / Paperback / Published 1993
Chivalrous Societytracking
Georges Duby / Paperback / Published 1981
Strong of Body, Brave and Noble : Chivalry and Society in Medieval Francetracking
Constance Brittain Bouchard / Paperback / Published 1998
Maurice Keen / Paperback / Published 1986
Form and Order in Medieval Francetracking
Brigitte Bedos-Rezak / Hardcover / Published 1993
The Fleurs de Lis of the Kings of France, 1285-1488tracking
William M. Hinkle / Hardcover / Published 1991
Becoming a French Aristocrat : The Education of the Court Nobility, 1580-1715tracking
Mark Edward Motley / Hardcover / Published 1990
Culture of Merit: Nobility, Royal Service and the Making of Absolute Monarchy in France, 1600-1789tracking
Jay M. Smith / Paperback / Published 1996
Old and New Nobility in Aix-en-provence, 1600-1695tracking
Donna Bohanan / Hardcover / Published 1992

Nobility:  Europe

The European Nobility, 1400-1800 (New Approaches to European History)tracking
Jonathan Dewald / Paperback / Published 1996
European Nobility and Heraldrytracking
John Harvey Pinches / Hardcover / Published 1994
Kings and Nobles in the Later Middle Ages : A Tribute to Charles Rosstracking
Ralph A. Griffiths, James Sherborne / Hardcover / Published 1987
Some Late Mediaeval Views on Nobilitytracking
Maurice Keen / Paperback / Published 1986
The Nobility of Hollandtracking
H.F.K. van Nierop, Maarten Ultee / Hardcover / Published 1993
Nobility of Holy Roman Empiretracking
Hardcover / Published 1997
State and Nobility in Early Modern Germanytracking
Hillay Zmora / Hardcover / Published 1998