The Kingdom of East Anglia, also known as the Kingdom of the East Angles, was a kingdom of the Anglo-Saxon Heptarchy and was located in the east of England. The Kingdom was founded by the Angles from Angeln in nothern Germany and initially consisted of Norfolk and Suffolk, with parts of northern Essex and the Isle of Ely later being added. The exact boundaries of the Kingdom are vague. The Kingdom of East Anglia was the most important of the Anglo-Saxon kingdoms in the seventh century but its importance waned thereafter. In the centuries following the seventh the Kingdom was often ruled by the Danes or the Kingdom of Mercia.
The Kingdom of East Anglia was founded in, roughly, 520 by the merging of the North folk (Norfolk) and South folk (Suffolk) and was part of the Anglo-Saxon Heptarchy. East Anglia, after defeating the Kingdom of Northumbria in roughly 616, briefly became the most power of the Kingdoms, with King Rædwald becoming the Bretwalda (overlord of the Anglo-Saxons kingdoms). Over the next forty years the power of East Anglia waned following two separate defeats to the Mercians, who under King Offa took control of East Anglia in 794.
The independence of East Anglia was restored following a successful rebellion between 825 and 827, which resulted in the death of two Mercian kings. In November 870 East Anglia was conquered by King Ivar of the Danes, who killed King Edmund. The Saxons later retook the area in 920 before losing it to Canute the Great between 1015-1017.