Accession Mamia was a son of
Liparit II Dadiani on whose death he succeeded—according to the early 18th-century Georgian scholar
Prince Vakhushti—in 1512. This traditionally accepted date was challenged, in 2001, by the historian Bezhan Khorava, who dates Mamia's accession to on account of his being styled as Dadiani, that is, the ruler of Mingrelia, in a
weregild charter issued by
Alexander II of Imereti for the
Svans in that year. By the time Mamia acceded to power, the medieval
Kingdom of Georgia had disintegrated and the Dadiani had become largely autonomous, nominally under vassalage of the
kings of Imereti.
Expedition in Zygia and death In 1533, Mamia Dadiani, in conjunction with
Mamia I Gurieli,
eristavi of
Guria, were encouraged by
Bagrat III of Imereti to embark on a campaign against the piratical
Circassian tribe of Zygii, whose vessels frequented the
Black Sea littorals of Mingrelia and Guria. an
Abkhaz. The allies were routed; Mamia Dadiani was disarmed, stripped naked, and stabbed to death, while Mamia Gurieli was taken prisoner. Malachia I
Abashidze,
Catholicos of Imereti and Abkhazia, went to the Zygii and ransomed the survivors and bodies of those who died. Prince Vakhushti errs in dating Mamia's expedition and his death to 1532, thus diverging from one of his sources, the so-called
Parisian Chronicle, which gives Friday, 31 January 1533 as the date of his death. Friday, indeed, fell on 31 January 1533 according to the
Julian Calendar. ==Family==