In that year, his lord sent him as a special envoy to the royal court of Béla IV in order to inform the monarch of the birth of his grandson, prince Ladislaus (b.
In the same year (autumn 1262), a brief skirmish took place and Stephen forced his father to cede all the lands of the Kingdom of Hungary to the east of the Danube to him and adopted the title of junior king in December 1262.
[6] He counter-signed the agreements between the two monarchs at Pressburg (today Bratislava, Slovakia) then Poroszló and acted as one of the oath-makers to the validity of the two documents in May 1263, when Stephen urged the papal confirmation of the treaty in his charter at the monastery of Szakoly.
[7] Dominic participated in Stephen's military campaign to Bulgaria in 1263, when the younger king sent reinforcements in order to support Jacob Svetoslav against the Byzantine Empire.
[5] According to Stephen's ledger from the first half of 1264, compiled by Syr Wulam, Dominic received gifts worth a total of 29 marks four times from his lord, who tried to attract his followers spasmodically during the continuously emerging tension with his father.
Nevertheless, it is possible Dominic – along with Michael, who was certainly present – was among the few dozen defenders in the siege of the fort of Feketehalom (today Codlea, Romania) at the turn of 1264 and 1265, while he presumably also participated in the decisive Battle of Isaszeg in early March 1265.
[9] Sometime during or after the civil war, which resulted Stephen's victory, Dominic was installed as palatine of the younger king's realm, ispán of Bács and Szeben counties, inheriting the offices of Denis Péc.
[14] He sold his estate Baracs in Nyitra County (today Bardoňovo, Slovakia) to Philip Türje, the Archbishop of Esztergom in June 1269.
In order to eliminate threat from the Kingdom of Bohemia and to stabilize of the domestic political situation, the newly crowned king reconciled with the former partisans of his late father, including Dominic and Michael Csák.
He also exempted Dominic, Michael and their descendants from the jurisdiction of the palatine and other barons, and placed them directly under the king's court or the judge royal.
[17] Because of Michael's advances military service, the brothers were granted Karos in Zala County in August 1272, shortly before Stephen's death.
The Monoszlós' coup d'état attempt ended in failure as the Gutkeled troops routed their army after some clashes and bloodshed.
[19] For his sacrifice, the queen donated the estate Hagymás (today Aljmaš, Croatia) lay at the confluence of rivers Danube and Drava in Valkó County, along with its accessories and local river duties, to Dominic in the first half of 1273 in exchange for his lands in Abaúj (or Borsod) and Zemplén counties – he lost Muhi, Nyárád, Szőlőske, Sztára and Perecse with this document.
[15] Dominic and Michael temporarily became disgraced due to their involvement in the attack and sack of the Diocese of Veszprém in the spring of 1276, led by their relative Peter Csák.
According to Queen Elizabeth's charter from that year, both of them actively participated in the "horrible attack", therefore she confiscated the village Karos from them and handed over the possession to the bishopric of Veszprém as a compensation.
Nevertheless, the lordship somehow was transferred to the property of Dominic's distant relative Ugrin Csák by the second half of the 1280s, who built his castle and the centre of his large-scale domains there.
[23] Following the assassination of Ladislaus IV in July 1290, his distant relative Andrew III was invited to the Hungarian throne.
The Peace of Hainburg, which concluded the war, was signed on 26 August 1291, and three days later Andrew and Albert of Austria confirmed it at their meeting in Köpcsény (today Kopčany, Slovakia).
[25] If he is identical with Ivan Kőszegi's son-in-law, He fought in the Battle of Göllheim in July 1298, as a member of the Hungarian contingent, which was sent by Andrew III to support Albert against Adolf of Nassau.