It was first created in 1097 for Walter Giffard, but became extinct in 1164 with the death of the second earl.
"Crendon" was the caput of the feudal honour held by Walter Giffard (died 1102), created Earl of Buckingham by William the Conqueror.
Walter Scott | Buckingham Palace | Sir Walter Scott | James Earl Jones | Walter Cronkite | Prince Edward, Earl of Wessex | Louis Mountbatten, 1st Earl Mountbatten of Burma | Horatio Nelson, 1st Viscount Nelson | Herbert Kitchener, 1st Earl Kitchener | Walter Raleigh | Walter Benjamin | Charles Cornwallis, 1st Marquess Cornwallis | Earl | 1st United States Congress | Frederick Roberts, 1st Earl Roberts | Bernard Montgomery, 1st Viscount Montgomery of Alamein | Earl of Derby | William Cecil, 1st Baron Burghley | Earl Warren | Walter Mondale | Earl of Pembroke | Robert Harley, 1st Earl of Oxford and Earl Mortimer | George Villiers, 1st Duke of Buckingham | Earl of Warwick | Walter Matthau | Walter Gropius | Thomas Wentworth, 1st Earl of Strafford | Edward Smith-Stanley, 14th Earl of Derby | Earl of Shrewsbury | Buckingham |
Also, the many branches of the Giffard family all claim ancestry from the lords of Bolbec or Bolebec and Longueville in Upper Normandy: Osbern de Bolebec became lord of Longueville in the early 11th century and his sons, Osbern Giffard and Gautier or Walter Giffard of Bolbec, were companions of William the Conqueror.