Kingdom of Sussex in the context of "Offa of Mercia"

The Heptarchy was the division of Anglo-Saxon England between the sixth and eighth centuries into petty kingdoms, conventionally the seven kingdoms of East Anglia, Essex, Kent, Mercia, Northumbria, Sussex, and Wessex. The term originated with the twelfth-century historian Henry of Huntingdon and has been widely used ever since, but it has been questioned by historians as the number of kingdoms fluctuated, and there was never a time when the territory of the Anglo-Saxons was divided into seven kingdoms each ruled by one king. The period of petty kingdoms came to an end in the eighth century, when England was divided into the four dominant kingdoms of East Anglia, Mercia, Northumbria, and Wessex.

Sussex (/ˈsʌsɪks/; from the Old English Sūþseaxe; lit. 'South Saxons'; 'Sussex') is an area of South East England that was historically a kingdom and, later, a county. The current ceremonial counties of East Sussex and West Sussex cover approximately the same area. The two ceremonial counties border Surrey to the north, Kent to the north-east, the English Channel to the south, and Hampshire to the west. Sussex contains the city of Brighton and Hove and its wider city region, part of the South Downs National Park and the national landscape of the High Weald, and Chichester Harbour. Its coastline is 137 miles (220 km) long.

The Kingdom of Sussex emerged in the fifth century in the area that had previously been inhabited by the Regni tribe in the Romano-British period. In about 827, shortly after the Battle of Ellendun, Sussex was conquered by Wessex. From 860 it was ruled by the kings of Wessex, and in 927 it became part of the Kingdom of England. By the Norman period, Sussex was subdivided into six administrative districts known as rapes, which were themselves divided into hundreds. By the sixteenth century, the eastern three rapes and the western three rapes had been combined for most meetings of the court of quarter sessions, a division which was reinforced when the administrative counties of East Sussex and West Sussex were established in 1889. Subsequent local government reforms maintained the division into east and west. The county retained a single lord lieutenant and sheriff until 1974, when they were replaced with separate posts for East and West Sussex and Sussex lost its status as a ceremonial county.

The Kingdom of the West Saxons, also known as the Kingdom of Wessex, was an Anglo-Saxon kingdom in the south of Great Britain, from around 519 until Alfred the Great declared himself as King of the Anglo-Saxons in 886.

The Anglo-Saxons believed that Wessex was founded by Cerdic and Cynric of the Gewisse, though this is considered by some to be a legend. The two main sources for the history of Wessex are the West Saxon Genealogical Regnal List and the Anglo-Saxon Chronicle (the latter of which drew on and adapted an early version of the List), which sometimes conflict. Wessex became a Christian kingdom after Cenwalh (r. 642–645, 648–672) was baptised and was expanded under his rule. Cædwalla later conquered Sussex, Kent and the Isle of Wight. His successor, Ine (r. 689–726), issued one of the oldest surviving English law codes and established a second West Saxon bishopric. The throne subsequently passed to a series of kings with unknown genealogies.

Ine or Ini (died in or after 726) was King of Wessex from 689 to 726. At Ine's accession, his kingdom dominated much of what is now southern England. However, he was unable to retain the territorial gains of his predecessor, Cædwalla of Wessex, who had expanded West Saxon territory substantially. By the end of Ine's reign, the kingdoms of Kent, Sussex, and Essex were no longer under West Saxon sway; however, Ine maintained control of what is now Hampshire, and consolidated and extended Wessex's territory in the western peninsula.

Ine is noted for his code of laws (Ines asetnessa or "laws of Ine"), which he issued in about 694. These laws were the first issued by an Anglo-Saxon king outside Kent. They shed much light on the history of Anglo-Saxon society, and reveal Ine's Christian convictions. Trade increased significantly during Ine's reign, with the town of Hamwic (now Southampton) becoming prominent. It was probably during Ine's reign that the West Saxons began to mint coins, though none have been found that bear his name.

OffaListen (c. 730 – 29 July 796 AD) was King of Mercia, a kingdom of Anglo-Saxon England, from 757 until his death in 796. The son of Thingfrith and a descendant of Eowa, Offa came to the throne after a period of civil war following the assassination of Æthelbald. Offa defeated the other claimant, Beornred. In the early years of Offa's reign, it is likely that he consolidated his control of Midland peoples such as the Hwicce and the Magonsæte. Taking advantage of instability in the kingdom of Kent to establish himself as overlord, Offa also controlled Sussex by 771, though his authority did not remain unchallenged in either territory. In the 780s he extended Mercian Supremacy over most of southern England, allying with Beorhtric of Wessex, who married Offa's daughter Eadburh, and regained complete control of the southeast. He also became the overlord of East Anglia and had King Æthelberht II of East Anglia beheaded in 794, perhaps for rebelling against him.

Offa was a Christian king who came into conflict with the Church, particularly with Jænberht, the Archbishop of Canterbury. Offa persuaded Pope Adrian I to divide the archdiocese of Canterbury in two, creating a new archdiocese of Lichfield. This reduction in the power of Canterbury may have been motivated by Offa's desire to have an archbishop consecrate his son Ecgfrith as king, since it is possible Jænberht refused to perform the ceremony, which took place in 787. Offa had a dispute with the Bishop of Worcester, which was settled at the Council of Brentford in 781.

Hwicce (Old English: [ˈʍittʃe]) was a kingdom in Anglo-Saxon England. According to the Anglo-Saxon Chronicle, the kingdom was established in 577, after the Battle of Deorham. After 628, the kingdom became a client or sub-kingdom of Mercia as a result of the Battle of Cirencester.

The Tribal Hidage assessed Hwicce at 7,000 hides, an agricultural economy akin to either the kingdom of Essex or Sussex.