for the royal servants of Újvár, Szabolcs and Borsod counties in Northeast Hungary at the turn of 1221 and 1222, as notes of the Regestrum Varadinense shows, which can be consider as precursors of the later regular palatinal assemblies (), according to historians Ilona Bolla, István Tringli and Attila Zsoldos. Bánk lost his positions, when Andrew's opponents, a group of former pro-Emeric lords took power over the royal council. He functioned as ispán of Újvár County for the third time in the second half of 1222, after Andrew II regained control over the kingdom. Over the decades, Bánk has received numerous land donations for his faithful services. Through this, he acquired Zsurk in Szabolcs County in 1212. He bought two villages named Lónya in Bereg County. He also possessed landholdings in Csoma and Gortva in Gömör County (present-day Čamovce and Gortva in Slovakia, respectively) and Újfalu and Jernye in Sáros County (present-day Chminianska Nová Ves and Jarovnice in Slovakia, respectively). Assassination of Queen Gertrude When Andrew II left Hungary for a new campaign against Halych, a group of Hungarian lords – led by Peter, son of Töre – taking advantage of the king's absence, attacked and assassinated Queen Gertrude and many of her courtiers in the Pilis Hills on 28 September 1213. The Hungarian lords were aggrieved at Queen Gertrude's favoritism towards her German entourage, according to some contemporary sources. Two royal charters of Béla IV of Hungary narrate that Bánk Bár-Kalán had participated in the assassination. In 1240, Béla IV donated Bánk's former lands, Csoma and Gortva to Gecse Türje. According to the document, Bánk had lost those estates for "his sin of high treason", since "he conspired to murder our dearest mother [Gertrude] — he lost all his possessions, not exactly unjustly, for he would have deserved more severe revenge by the judgment that common sense had brought upon him". When Béla granted the landholdings Újfalu and Jernye to Merse, son of Benedict (ancestor of the prestigious Szinyei Merse family) in 1262, the king noted too that those estates escheated to the crown from "our disloyal, Ban Bánk". According to a royal charter of Stephen V from 1270, the lands of Bánk's son-in-law Simon in Bereg and Szabolcs counties were also confiscated prior to that. The Austrian Rhyming Chronicle ("Chronicon rhythmicum Austriacum") is the earliest known work, which preserved the alleged story of that Archbishop Berthold of Kalocsa,