He had at least two children from his unidentified wife: Csépán I, who served as Ban of Slavonia from 1206 to 1207[2] and died without heirs, as his only son Stephen became a monk, giving up his secular life and family name.
[1] He served as Master of the treasury (Latin: magister cubiculariourum) in 1198,[4] when this dignity was still a non-permanent position without defined and circumscribed jurisdiction, thus the office was only stabilized during the reign of Andrew II of Hungary.
[7] When Palatine Mog participated in Duke Andrew's conspiracy, Emeric, King of Hungary dismissed and replaced him with Mika Ják.
According to Emeric's letter to Pope Innocent III, Mika was excommunicated by Elvin, Bishop of Várad because he had formerly captured one of the bishopric's priests, who functioned as a messenger of the King's enemies who supported Duke Andrew.
[11] As historian Attila Zsoldos proves by comparing with the previous allegations, Palatine Mika was not identical with his namesake, who served as ispán of Bihar County for several times in the 1210–20s.