Marklo was according to the Vita Lebuini antiqua, an important source for early Saxon history, the tribal capital of the Saxons

Saxons

The Saxons were a confederation of Germanic tribes originating on the North German plain. The Saxons earliest known area of settlement is Northern Albingia, an area approximately that of modern Holstein...

 where they held an annual council to "confirm their laws, give judgment on outstanding cases, and determine by common counsel whether they would go to war or be in peace that year." After the conquest of old Saxony

Old Saxony

Old Saxony is the original homeland of the Saxons in the northwest corner of modern Germany and roughly corresponds today with the contemporary Lower Saxony, Westphalia and western Saxony-Anhalt....

 by Charlemagne

Charlemagne

Charlemagne was King of the Franks from 768 and Emperor of the Romans from 800 to his death in 814. He expanded the Frankish kingdom into an empire that incorporated much of Western and Central Europe. During his reign, he conquered Italy and was crowned by Pope Leo III on 25 December 800...

 in 782

782

Year 782 was a common year starting on Tuesday of the Julian calendar. The denomination 782 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.- Europe :* Charlemagne summons the monk and scholar...

 the tribal councils of Marklo were abolished.

Marklo has been identified by the anthropologist H. H. Howarth with the village of Markenah in the district of Hoya near Heiligen Ioh, a "sacred wood" and Adelshorn in Lower Saxony

Lower Saxony

Lower Saxony is a German state situated in north-western Germany and is second in area and fourth in population among the sixteen states of Germany...

.