[6] He was first mentioned by contemporary records in 1241, when he held the dignity of Master of the cupbearers following the Mongol invasion of Hungary and his father's death, who perished in the battlefield at Mohi.
Roland fortified and defended Sopron and Pozsony Castle, but Frederick's army successfully besieged and captured them (according to Veronika Rudolf, this skirmish occurred during the Mongol invasion took place five years earlier).
[11] Later Roland's army, also consisted of Cumans led by Alpra and the auxiliary troops of Rostislav Mikhailovich, was defeated by the Austrians in the Battle of the Leitha River on 15 June 1246, however Frederick was killed on the battlefield, resulting in the end of the conflict and interregnum in Austria.
[12] Roland was appointed Palatine in 1248, serving in that capacity unusually long period of time in that era, until 1260 as loyal to King Béla IV.
When Béla IV revised his predecessors' land grants and reclaimed former royal estates, which greatly affected Pozsony County, Roland was entrusted with the implementation.
Historian Kornél Szovák claimed Roland Rátót employed the clerical staff of the Pressburg chapel as his literate personnel.
[20] In accordance with the treaty, Ottokar, who had in the meantime become King of Bohemia, ceded the Duchy of Styria to Béla, who also adopted the title Duke.
[21] He helped Béla IV in organizing and consolidating the Hungarian administration in Styria, he stayed Bad Radkersburg (Regede) several times in the 1250s.
[8] Although, Roland did not bore the title of Duke of Slavonia unlike his predecessors Denis Türje and Stephen Gutkeled, he had a significant influence over Dalmatian affairs.
[28] Following the peace, Stephen intended to punish limitedly the Cumans, with the approval of Béla, who had earlier betrayed him and joined the King's camp during the war.
Under the influence of loyal barons' intrigues, King Béla dismissed Roland and replaced him with Henry Kőszegi in the summer of 1267.
[30] It is highly probable that Béla considered his participation in Duke Stephen's campaign against Bulgaria as a misuse of powers since the King gave him the army only for regularizing the Cuman tribes.
[33] Alongside other merits, the donation letter also said Roland "is pleasant in conversation" and "he is able to endear himself with others", which reflects the impact of chivalric code in the royal court.
[34] Amidst a brief conflict between Hungary and Bohemia in the spring of 1271, Roland, alongside Bishop Paul Balog and cleric Thomas, was sent to Ottokar's court to negotiate with the Bohemian king, while Stephen V prepared for an open battle.
He was also present when the two monarchs signed the Peace of Pressburg on 2 July 1271, and himself he was among the guarantors of the document with the honorary title of simply "banus", which indicates his distinguished status even though he held no position at the time.
[35] The sudden death of Stephen V and subsequent coronation of the 10-year-old Ladislaus IV in August 1272 allowed him to become one of the most powerful barons in the country.
[8] According to historian Jenő Szűcs, Roland has been able to reach the highest-ranking secular position for the second time in November 1272, because the two rival baronial groups and the nominal regent Dowager Queen Elizabeth the Cuman considered the semblance of unity as important in the first years yet.
[40] Following the Battle of Föveny in September 1274, where Henry Kőszegi was killed, Roland defected to the supporters of the Csák kindred, and could manage to become Palatine for a fourth term.
[41] Roland, along with the Csáks, proposed the wedding of Andrew, Duke of Slavonia (Ladislaus' brother) with Clementia (Rudolf's daughter) in late 1274.
[47] In this capacity, he represented the Hungarian barons, when Ladislaus IV met Rudolf of Habsburg in Hainburg an der Donau on 11 November to confirm their alliance against Ottokar II of Bohemia.