The following individuals were Earls (suo jure or jure uxoris) or Countesses (suo jure) during the reign of King Edward I of England who reigned from 1272 to 1307.
The period of tenure as Earl or Countess is given after the name and title of each individual, including any period of minority.
Henry de Bohun, 1st Earl of Hereford of Pleshy Castle in Essex, was an Anglo-Norman nobleman who became Hereditary Constable of England from 1199.
The Lord High Constable of England is the seventh of the Great Officers of State, ranking beneath the Lord Great Chamberlain and above the Earl Marshal. This office is now called out of abeyance only for coronations. The Lord High Constable was originally the commander of the royal armies and the Master of the Horse. He was also, in conjunction with the Earl Marshal, president of the court of chivalry or court of honour. In feudal times, martial law was administered in the court of the Lord High Constable.
Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester was a powerful English noble. He was also known as "Red" Gilbert de Clare or "The Red Earl", probably because of his hair colour or fiery temper in battle. He held the Lordship of Glamorgan which was one of the most powerful and wealthy of the Welsh Marcher Lordships as well as over 200 English manors.
The title of Earl of Hereford was created six times in the Peerage of England. Dates indicate the years the person held the title for.
Humphrey (VI) de Bohun, 3rd Earl of Hereford and 2nd Earl of Essex, was an English nobleman known primarily for his opposition to King Edward I over the Confirmatio Cartarum. He was also an active participant in the Welsh Wars and maintained for several years a private feud with the earl of Gloucester. His father, Humphrey (V) de Bohun, fought on the side of the rebellious barons in the Barons' War. When Humphrey (V) predeceased his father, Humphrey (VI) became heir to his grandfather, Humphrey (IV). At Humphrey (IV)'s death in 1275, Humphrey (VI) inherited the earldoms of Hereford and Essex. He also inherited major possessions in the Welsh Marches from his mother, Eleanor de Braose.
Humphrey (VII) de Bohun, 4th Earl of Hereford was a member of a powerful Anglo-Norman family of the Welsh Marches and was one of the Ordainers who opposed Edward II's excesses.
Humphrey IV de Bohun, 2nd Earl of Hereford, 1st Earl of Essex was an Anglo-Norman nobleman and soldier who served as hereditary Constable of England.
Anne of Gloucester, Countess of Stafford was the eldest daughter and eventually sole heiress of Thomas of Woodstock, 1st Duke of Gloucester, by his wife Eleanor de Bohun, one of the two daughters and co-heiresses of Humphrey de Bohun, 7th Earl of Hereford, 6th Earl of Essex (1341–1373) of Pleshy Castle in Essex.
The Lordship of Glamorgan was one of the most powerful and wealthy of the Welsh Marcher Lordships. The seat was Cardiff Castle. It was established by the conquest of Glamorgan from its native Welsh ruler, by the Anglo-Norman nobleman Robert FitzHamon, feudal baron of Gloucester, and his legendary followers the Twelve Knights of Glamorgan. The Anglo-Norman Lord of Glamorgan, like all Marcher lords, ruled his lands directly by his own law: thus he could, amongst other things, declare war, raise taxes, establish courts and markets and build castles as he wished, without reference to the Crown. These privileges were only lost under the Laws in Wales Acts 1535–1542. Though possessing many castles, the main seat of the Lordship was Cardiff Castle.
Ralph de Monthermer, 1st Baron Monthermer, Earl of Gloucester, Hertford, and Atholl was an English nobleman, who was the son-in-law of King Edward I. His clandestine marriage to the King's widowed daughter Joan greatly offended her father, but he was quickly persuaded to pardon Ralph.
The de Bohun then Bohun family is an English noble family of Norman origin that played a prominent role in English political and military history during the Late Middle Ages. The swan used by the family and their descendants as a heraldic badge came to be called the Bohun swan.
Ellis, Geoffrey. (1963) Earldoms in Fee: A Study in Peerage Law and History. London: The Saint Catherine Press, Limited.
Morris, Marc. (2005) The Bigod Earls of Norfolk in the Thirteenth Century. Woodbridge: The Boydell Press. ISBN 9781783270095
Spencer, Andrew M. (2014) Nobility and Kingship in Medieval England: The Earls and Edward I, 1272-1307. Cambridge: Cambridge University Press. ISBN 9781107608481