[1] A certain Gylianus, son of Bocion, who acted as pristaldus (bailiff) on his behalf, referred to Mika as his "contubernarius", which phrase described the political and social relationship between them, a kind of proto-familiaritas.
Along with other noblemen, he participated in the Hungarian military campaign against the Principality of Halych in the summer of 1211, when Andrew II intended to restore the child Danylo Romanovich to the Galician throne upon the request of a group of boyars.
[6] King Andrew II commissioned Mika, endowing him with special licenses, to judge over legal cases involving the privileged group of royal servants in 1220.
According to a charter from that year, the "fellows of Bihar County" (i.e. royal servants) sought justice in a matter of theft from Mika, "the judge dispatched by King Andrew".
[8] These data prove that Mika's jurisdiction regarding the legal cases of the royal servants geographically covered the entire territory of the realm, after Andrew II delegated this function specifically to him.
[6] After Andrew's eldest son and rival, Béla IV ascended the Hungarian throne in 1235, Mika fell out of the favor of the royal and completely lost political influence.
According to a letter of Béla IV to Pope Gregory IX around August 1236, Mika had usurped much of the crown revenues and deposited it with local churches (possibly in Bihar County).