Ulrich I of East Frisia (c. 1408 in Norden – 25 or 26 September 1466 in Emden), also known as Ulrich Cirksena and Ulrich Ennosna, was an East Frisian chieftain who became the first Count of East Frisia in 1464 and the founder of the House of Cirksena. Through a combination of dynastic inheritance, legal claims, diplomacy, and political pragmatism, he united most of the East Frisian territories under his authority and transformed a fragmented network of autonomous chieftaincies into a territorially organised county within the Holy Roman Empire. Born into the Cirksena family of Greetsiel, Ulrich inherited extensive claims through both his paternal and maternal ancestry. Following the death of his half-brother Edzard in 1441, he became head of the family and gradually established himself as the dominant political figure in East Frisia. Rather than relying primarily on military conquest, he based his expansion on negotiated settlements, inheritance rights, judicial authority, and recognition by local communities, while carefully respecting traditional Frisian legal customs and liberties. As custodian of Hamburg's possessions in East Frisia and later as its principal ruler, Ulrich consolidated his position by restructuring local administration, strengthening judicial institutions, and acquiring hereditary claims from rival chieftain families. His marriage to Theda Ukena further reinforced his dynastic position by connecting the Cirksena to the influential Ukena family. On 1 October 1464, Frederick III, elevated Ulrich to the rank of Imperial Count and transformed his territories into the County of East Frisia, thereby granting imperial legitimacy to his rule while explicitly confirming the traditional liberties of the East Frisian lands. Historians generally regard this act as the constitutional foundation of the East Frisian county and the beginning of nearly three centuries of Cirksena rule. Ulrich died in 1466 and was succeeded by his underage son Enno I, with his widow Theda serving as regent. He is widely regarded as the founder of the East Frisian state and one of the most important political figures in the history of medieval Frisia.
Biography
Early life Ulrich descended from the chieftain family of Greetsiel. His father Enno Edzardisna had received the inheritance of the Attena of Norden that had fallen to him and thereby had become chieftain at Norden. His mother Gela was the daughter of Affo Beninga, chieftain at Pilsum and Manslagt, and of Tiadeka of Berum from the even more highly esteemed family of the "Tzyerza", that is, the original Cirksena dynasty. She was Enno's second wife, just as Enno was her second husband. After her only son from her first marriage, the chieftain Liudward Cirksena ("Syrtza") of Berum, had died childless in the middle of the 1430s, she and her niece Frauwa Cirksena ("Sydzena") remained the sole heirs of the Cirksena of Berum. Enno thereupon married his son from his first marriage, Ulrich's half-brother Edzard Ennosna, to Frauwa, and both adopted the family name of their wives. Whereas Gela had already brought her husband Enno the chieftainship of Pilsum and Manslagt through her paternal Beninga inheritance between 1404 and 1408, Edzard now received Berum through his wife Frauwa. Only when Edzard and Frauwa died in 1441 without leaving children did Ulrich become the principal heir of the Cirksena of Berum as well; and he likewise retained this family name. In view of the great importance that this family evidently possessed, the so-called Manslagt coat of arms, which the East Frisian counts incorporated into their territorial coat of arms alongside those of the tom Brok and the Ukena, is therefore likely to have been that of the Cirksena of Berum. For Gela was referred to in tradition (probably after her dowry) as "of Manslagt".
Ulrich first appeared in a political capacity in 1430 (together with his father and his older half-brother Edzard). Ulrich was probably brought up first in Norden and Manslagt (or Larrelt), and later in Greetsiel, for after his uncle Haro, chieftain at Greetsiel, had died without children, his father inherited this ancestral castle. He then witnessed the growing opposition among the East Frisians against Ocko II tom Brok, led by Focko Ukena and his sons, a movement which Ulrich's father Enno also joined. It led in 1427 to the overthrow of the rule of the tom Brok, but, to their disappointment, the East Frisians did not regain the traditional liberties for which they had taken the field against the modern exercise of lordly authority. Instead, the chieftainships of the Ukena and their allies arose anew. The peasants, who had taken up arms less for the restoration of the sovereignty of the chieftains than for the freedom of the common people, felt betrayed and, now led by the Cirksena, turned their anger against the new old rulers. A complete victory over the Ukena and their allies, however, still required additional forces: the city of Hamburg. In 1433, by capturing Emden and winning the battle near Norden (Bargebur), it finally secured victory for the East Frisian League of Freedom, but at the same time this marked the beginning of the end of the Frisian dream of freedom. The price of this security was the occupation of Emden and southern East Frisia by the Hamburgers. It taught the East Frisians that without feudalism, and without power the law, freedom could not endure. This experience, which soon came to be generally accepted, greatly strengthened the position of the Cirksena, who for their part had learned from the past that the establishment and exercise of power and rule in violation of the East Frisians' sense of justice and love of freedom were ultimately doomed to failure. Thus the territorial communities once again entrusted the Cirksena and their closest allies with rule over themselves—in the confidence that through them a regime of arbitrary rule in the old style would not return, and probably also out of fear that otherwise they might fall under foreign rule. They found that possibility even more objectionable.
Consolidation of power In 1439, Hamburg entrusted its rule in East Frisia to the two Cirksena brothers for safekeeping. For the Hanseatic city, as for the East Frisian territories, it was only advantageous that there should be no sole ruler here, although from 1440 onwards Edzard concentrated on Emden and the Norderland, while Ulrich concentrated on Esens and the Auricherland; moreover, in their dealings with Hamburg they had no hesitation in calling themselves (unlawfully) chieftains at Emden.
But an unforeseen event upset this arrangement of divided authority: Edzard and his wife, still childless, were carried off by an epidemic in 1441, so that the entire responsibility suddenly fell upon Ulrich alone. Only then could it become apparent what he was capable of, and whether the expectations that his father-in-law Wibet had placed in him as heir to the Harlingerland could also be fulfilled by him for the rest of East Frisia. Ulrich, who from 1444 onwards also called himself Chieftain in East Frisia, left no doubt that he intended to secure his rule in East Frisia. He avoided violence and arbitrariness and observed law and custom. This prudent consideration for the pronounced sense of justice of the East Frisians, and his convincing conduct in showing that he was serious about it, greatly strengthened their confidence in him and thereby his authority.
But Ulrich also became increasingly active on his own initiative as custodian of Hamburg's ru.e in East Frisia. Not only did it attract attention that in 1442 he helped the community of Emden to obtain a municipal council constitution and began the expansion of the castle after its last hereditary chieftain, Imel Abdena, had died while imprisoned in Hamburg, but also, and especially, that Ulrich had the frontier fortress of Detern rebuilt with the support of at least the territorial community of Lengen, which was a clear indication of his own independent will. Unlike the East Frisians, with whom he could assume himself to be in agreement, the Hamburgers could neither accept nor tolerate this, for they were bound to interpret his conduct as estrangement from them. They therefore returned to Emden in 1447 and once again took their East Frisian rule into their own hands. Ulrich raised no objections to this, but submitted himself to the legal right that Hamburg indeed possessed to do so.
Although Ulrich had returned to the Hamburgers the rule that he had held in safekeeping for them, he was by no means willing to confine himself solely to the expansion of his rule over the other part of East Frisia. He now made use of the pressure exerted by the exiled chieftains for their return, acting as their advocate, as well as of the deeply rooted antipathy of the East Frisians towards foreign rule, while avoiding any open breach of law or unjustified use of force against the Hamburgers. Only when they refused to reimburse his expenses, especially those incurred in rebuilding Detern Castle, did Ulrich obtain the welcome pretext for yielding to the demands of the East Frisians and driving the Hamburgers out of East Frisia. At the end of this conflict, Hamburg was forced to admit defeat and in 1453 restored rule to Ulrich. Although victorious, Ulrich had to pay dearly for this. The city pledged its rule to Ulrich for 10,000 marks, received homage from him and from his closest relatives—his nephew Sibet Attena and his brother-in-law Lutet Manninga—and furthermore reserved to itself important political rights and economic liberties, particularly with regard to the construction and expansion of castles (which Ulrich continued at Emden in 1458) and especially the importation of beer. However, it was only after sixteen years that the city was able to redeem this pledge, so that Ulrich at least gained sufficient time gradually and noticeably to strengthen his position. In a realistic assessment of the balance of power, he preferred to employ diplomatic rather than military means to achieve this.
Establishing a legal basis for rule
The establishment of the legal basis of his rule was particularly complicated, since the territorial community here did not constitute a single unit, but rather consisted entirely of parish communities with their own chieftains, most of whom had moreover been driven into exile. They were united only by the prevailing Emsiger Land Law; and in this Ulrich saw a great opportunity. He established, in agreement with his relatives and allies, a new institution in the Emsigerland that was binding upon everyone (including himself): that of the two Land Judges. By means of this institution, and by gradually turning them into his own officials, Ulrich subsequently took possession of judicial authority in the Emsigerland and thereby deprived the other chieftains and lords of their power, since the former judicial office, as an essential component of his rule, had henceforth become superfluous for the chieftains. By law, they could now claim only their hereditary property as a legitimate right; and Ulrich could neither nor wished any longer to dispute this. In return for acknowledging his supremacy (as, for example, Redert Beninga of Groothusen did in 1442), he promised to support them against Hamburg in this respect, while, on the other hand, as administrator of Hamburg's rule, he also carefully respected Hamburg's claims against the exiled chieftains.