Mojs, also Moys, Majs or Majos (died September/December 1280) was a powerful Hungarian baron in the 13th century, who held various positions in the royal court since the early 1250s. He retained his influence until his death, owing to his marriage with an unidentified relative of the ruling Árpád dynasty. His last will and testament is a uniquely detailed source on the social history of the Árpádian era. Through his daughters, Mojs was maternal ancestor of the Meggyesi, Tamási, Herceg de Szekcső and Báthory de Somlyó noble families.

Career Béla's confidant Mojs (II) was born in the first decade of the 13th century, as one of the three children of Mojs (I) and Venys Monoszló.Engel: Genealógia (Mojs kinship 1.) The family background of the elder Mojs is unknown, but he definitely originated from a wealthy and notable kindred due to his marriage, which presumably possessed lands in Slavonia. He was a prominent supporter of Duke Béla since the 1220s, as a result his career in the royal court could not be fulfilled because of the tension between Béla and his father, King Andrew II. Mojs (II) had a brother Alexander, who was referred to as royal sword-bearer in 1233. Their unidentified sister married Nana Bár-Kalán, the son of Pousa Bár-Kalán.

Due to his father's political orientation, the young Mojs raised in the ducal court of Béla, who ascended the Hungarian throne in 1235. It is plausible that Mojs Sr. died before that, and his political legacy was carried forward by his son, who first appeared in contemporary records in August 1245, when King Béla IV donated the village of Izdenc in Somogy County beyond the river Drava (present-day Zdenci, Croatia) to him. Mojs participated in the royal campaign against the Duchy of Austria in the summer of 1250. He commanded a huge contingent, which besieged and captured the castle of Kirchschlag. For his merits, he was made Master of the horse in 1251. He served in this capacity until 1254. Thereafter, he held the position of head of Gora ispánate (located in Zagreb County) from 1254 to 1256. Mojs functioned as Master of the stewards and ispán of Vrbas (or Orbász) County from 1256 to 1258.

When tensions emerged in the relationship between Béla IV and his eldest son and heir Duke Stephen by 1260, Mojs plausibly remained neutral. He even kept himself away from the events, when the confrontation sparked into a civil war in 1262 then 1264–65. Historian Jenő Szűcs considered Mojs' family relationship with the Árpád dynasty allowed him to balance between the two opposing parties. Nevertheless, Mojs definitely belonged to the king's confidants. He served as treasurer in the ducal court of King Béla's namesake favorite son Béla, Duke of Slavonia, in addition to his positions ispán of Somogy and Varaždin counties from 1260 to 1267. He was also referred to as ispán of Bihar County by a single document in 1264. After the closure of the civil war, Mojs participated in the joint military campaign of Béla IV and Stephen against Bulgaria in the summer of 1266. Around 1263, Mojs and his three relatives erected a Cistercian monastery at Ábrahám (near Dombóvár) in Tolna County, dedicated to Virgin Mary. Béla IV confirmed the foundation in that year. Mojs made further land donations to the monastery in 1272 and 1273, granting altogether 9 villages and 20 servant families from Tolna and Bodrog counties to the Cistercian friars.

Feudal anarchy After the death of Béla IV, his son and former enemy Stephen V ascended the Hungarian throne in May 1270. The new monarch intended to reconcile with his late father's former partisans, in the midst of an ongoing crisis when his sister Anna, Duchess of Macsó and some Transdanubian pro-Béla lords fled Hungary and sought asylum in the court of Ottokar II of Bohemia. As a result, Mojs was made Palatine of Hungary by Stephen V few days before his coronation. Beside his most prestigious position, Mojs also served as ispán of Sopron County from 1270 to 1272 and Szeben County briefly in 1270. In addition to his family relationship with the Árpád dynasty and the Monoszló kindred – who enjoyed the support of Stephen V –, Mojs' person symbolized a unified government and Stephen's title ("king of whole Hungary"). When Stephen granted Esztergom County to Archbishop Philip Türje who crowned him king in Esztergom on or after 17 May, Mojs was entrusted to inaugurate the prelate to his new lordship of perpetual ispánate. Shortly after Mojs granted privileges to his own servants, the hospes (foreign "guest settlers") of Kazsok. When the feud between Stephen V and Ottokar II escalated into a large-scale war, Mojs joined the royal camp and participated in the military campaign in the spring of 1271. Despite his dignity of ispán there, the castle of Sopron was defended by brothers Osl and James Osl. When the two kings' envoys reached an agreement in Pressburg on 2 July, Mojs was among the signatories of the document. Mojs was the first Palatine, who assumed the dignity of Judge of the Cumans, which thereafter became part of its ex officio title to merge the two positions for centuries.

When Joachim Gutkeled kidnapped Stephen's heir, the 10-year-old Ladislaus in the summer of 1272, it marked the beginning of the era of "feudal anarchy". Stephen V, who unsuccessfully attempted to liberate his son, seriously fell ill. One of his last decisions was that he appointed Mojs as Ban of Slavonia on 3 August, in order to replace the treacherous Joachim Gutkeled. The king died three days later, on 6 August. In the upcoming years, two baronial groups rivaled for the supreme power under the nominal reign of Dowager Queen Elizabeth the Cuman. Joachim recovered his position of Ban by 22 August 1272. Thereafter, Mojs stayed away from the power struggles and was considered a confidant of the royal family. Queen Elizabeth returned the villages of Kazsok, Béc, Csap, Farnas and Ráksi in Somogy and Tolna counties to Mojs in that year. According to the lord, Béla IV's late wife, Queen Maria Laskarina unlawfully seized the settlements – his patrimony – from him prior to that. Mojs served as ispán of Somogy County from 1273 to 1274. Thereafter, he belonged to the household of Queen Isabella of Sicily, the wife of Ladislaus IV. He was treasurer of the queenly court between 1274 and 1275. Beside that, he also functioned as ispán of Szepes County in the same period. He was count (head) of the household in 1275. Meanwhile, a new civil war broke out between Joachim Gutkeled and Peter Csák in the following months. Mojs took part in Ugrin Csák's failed attempt to annihilate Joachim's troops at Föveny (near Polgárdi). Returning the royal court, Mojs again served as ispán of Somogy County from 1275 to 1276. He was Judge royal for a short time in the first half of 1276. Finally, Mojs served as treasurer of the queenly court from 1277 until his death in 1280.

Personal life Marriage(s) It is widely academic standpoint that Mojs' unidentified wife had family relationship with the ruling Árpád dynasty. She first appeared in contemporary records in 1260, when King Béla IV permitted Mojs to be free to dispose of his inherited and acquired property to his wife and daughters, as he had no male descendants. She was again mentioned by her husband's last wills and testaments in 1267, 1270 (confirmation of the 1260 document), 1272 and 1280, as "lady of noble origin" (de nobiliorte prosapia) in the latter case. King Ladislaus IV referred to Mojs' unidentified wife as his "sister" (soror) on 2 January 1281. Ladislaus' successor Andrew III and his spouse Queen Fenenna of Kuyavia also referred to her as their "sister-in-law" (cognata) in the early 1290s.

Several historians tried to determine her identity and closer kinship to the royal dynasty. 16th-century chronicler and court historian András Valkai claimed Mojs' unidentified wife was identical with a certain Sophia, alleged daughter of Emeric, King of Hungary. Jesuit scholar László Turóczi wrote in his work Hungaria cum suis regibus (1768) that Mojs "probably" married to Sabina, the daughter of Béla IV and Maria Laskarina. There is no record of any "Sabina" in the genealogical line of the royal family. Historian Mór Wertner refused this theory in his monograph Az Árpádok családi története (1892); Béla IV did not refer to Mojs as his son-in-law in his charters (in contrast to Rostislav Mikhailovich), furthermore it would have been unworthy for Béla to engage his daughter with an elderly lord of Béla's similar age. Wertner also emphasized the aforementioned conflict between Mojs and Queen Maria as an exclusion factor. Wertner argued Mojs' wife was related to the Árpád dynasty only on maternal side and had some degree related to Queen Elizabeth the Cuman, the spouse of Stephen V. In his work Az Árpádok királyi vére Magyarország családaiban (1895), genealogist Bálint Kis de Baczka-Madaras considered Mojs' wife as a member of the senior branch of the Árpád dynasty, refusing Wertner's skepticism with examples of morganatic marriages of Hungarian princesses in previous periods and of the emphasis on conflicts within the dynasty, under which Queen Maria's move against Mojs could not have seemed unusual. Bálint Kis refused Turóczi's theory regarding the wife's name, which could have spread through a local oral tradition (she owned Kisszeben, in Slovak: Sabinov). Kis argued the name of Mojs' wife was Elizabeth, as she was referred to by his name one of the versions of the hagiography of St. Margaret. Accordingly, both Mojs and Elizabeth appeared before the sick bed of Ladislaus IV, who contracted an unidentified serious illness, but recovered from it in 1275. Accepting the opinion of Gusztáv Wenzel, Bálint Kis considered that "Elizabeth" was the daughter of Duke Rostislav Mikhailovich and Duchess Anna of Macsó.

Based on a last will and testament of a certain noble lady Leyphilt from 1312, historian János Karácsonyi claimed in his study (1923) that Mojs' widow was called "Sibylla" and she was the daughter of Anna, Queen Elizabeth's assumed sister. The document narrates, the Beguines of Buda lived in Sibylla's house, which building formerly belonged to the ownership of Mojs' wife, consequently Karácsonyi assumed the house was named after her. The historian even considered that Anna, Mojs' mother-in-law appeared before the sick bed of Ladislaus (1275) in the hagiography of St. Margaret, instead of Anna, Duchess of Macsó. Karácsonyi argued Mojs married twice. His first wife died either in 1267 or 1268, and Mojs later married the 20-year-old Sibylla, becoming a member of Stephen V's inner circle. One of the physicians, who cured the sick young king, was a certain Gratian, Mojs' personal physician. Karácsonyi assigned Queen Elizabeth and "Anna" to the gens Kán and the person of Jacob Svetoslav, but his whole theory was neglected or rejected by the later historiography. Nevertheless György Györffy accepted the "Sibylla" name variant. Emil Jakubovich, who also wrote a study in the same issue of journal Turul (1923), called Karácsonyi's paper "built on a whole chain of bold hypotheses". The historian proved that Queen Elizabeth actually had an unnamed sister, who married Gregory Monoszló. Jakubovich emphasized that Margaret's legend definitely states that Mojs' wife was Elizabeth. The investigation report of the canonization process incorrectly referred to Mojs as deceased person two occasions. Jakubovich did not rule out that Elizabeth was also a relative (cousin or more distant) of Queen Elizabeth the Cuman.