According to genealogist Mór Wertner, Andrew belonged to the gens (clan) Kadarkalász, which possessed landholdings in Veszprém and Pilis counties.
[3] After Emeric ascended the Hungarian throne in 1196, he was embroiled in dynastic conflict with his younger brother Duke Andrew, who forced the monarch to make him de facto ruler of Croatia and Dalmatia as appanage in 1197.
[4] His name is frequently listed first among the witnesses to Duke Andrew's grants of privileges, even preceding the Dalmatian prelates, which was atypical in the period.
[6] It is plausible that Ban Andrew took part in his lord's campaign to Zachlumia (Hum) and Raška (Serbia) in the spring of 1198.
[7] According to György Szabados, his position was not recognized by King Emeric, who appointed a parallel ban, Nicholas over the province.
The princess bequeathed her dower to the Knights Templar in her last will and testament, but Andrew's son Andronikos (or Andronicus) – who was still alive in 1208 – refused to hand over the amount or landholding.
[11] Based on the letter, Mór Wertner considered Margaret was the youngest, possibly posthumous daughter of King Géza II and Euphrosyne of Kiev.
[13] A 15-century royal charter narrates that Andrew II married off his "blood relative" ("consanguinea") Margaret to his confidant Mercurius (who died in 1206 or shortly after).