Sibet Attena (also: la, Sibo; – 8 November 1473) was an

East Frisia East Frisia or East Friesland (german: Ostfriesland; ; stq, Aastfräislound) is a historic region in the northwest of Lower Saxony, Germany. It is primarily located on the western half of the East Frisian peninsula, to the east of West Frisia ...

chieftain A tribal chief or chieftain is the leader of a tribe, tribal society or chiefdom. Tribe The concept of tribe is a broadly applied concept, based on tribal concepts of societies of western Afroeurasia. Tribal societies are sometimes categori ...

. He was a son of Sibet of Dornum (''"old Sibet"'') (d. 1433) and Frouwa of Manslagt, a daughter of Enno Cirksena. From his father he inherited the Beninga Castle in

Dornum Dornum is a village and a municipality in the East Frisian district of Aurich, in Lower Saxony, Germany. It is situated near the North Sea coast, approx. 15 km east of Norden, and 20 km north of Aurich. Division of the municipality The ...

. From his first wife, Onna of Stedesdorf, a daughter of Hero Omken the Elder, he inherited

Stedesdorf Stedesdorf is a municipality in the district of Wittmund, in Lower Saxony, Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, ...

in 1447. As a nephew and a loyal supporter of Ulrich Cirksena, he was invested with Esens in 1454. He was also to inherit Manslagt via his mother, but he renounced this. Also in 1454, he supported Ulrich Cirksena against Tanne Kankena in

Wittmund Wittmund is a town and capital of the district of Wittmund, in Lower Saxony, Germany. Geography Wittmund is a town of 21,000 inhabitants located in Germany's historic coastal district of East Frisia, between the towns of Aurich and Jever. The ...

. He occupied Kankena's castle in Wittmund and expelled him. Seven years later he invested Kankena with Dornum. From 1455, he called himself "Chieftain at Esens, Stedesdorf and Wittmund". Thus, he viewed himself as the ruler of the

Harlingerland The Harlingerland is a strip of land on the North Sea coast of East Frisia. While today the whole of the district of Wittmund is usually described as Harlingerland, historically it specifically refers to the northern part of the present district, ...

. After Onna of Stedesdorf died in 1464, he married his second wife Margaret of Westerwolde. Sibet was present in 1464 at the solemn ceremony in the Guesthouse Church in

Emden Emden () is an independent city and seaport in Lower Saxony in the northwest of Germany, on the river Ems. It is the main city of the region of East Frisia and, in 2011, had a total population of 51,528. History The exact founding date of E ...

where Ulrich Cirksena was raised to

Imperial Count Imperial Count (german: Reichsgraf) was a title in the Holy Roman Empire. In the medieval era, it was used exclusively to designate the holder of an imperial county, that is, a fief held directly ( immediately) from the emperor, rather than from ...

and was

knight A knight is a person granted an honorary title of knighthood by a head of state (including the Pope) or representative for service to the monarch, the church or the country, especially in a military capacity. Knighthood finds origins in the Gr ...

ed during that ceremony. After his death, a magnificent sandstone sarcophagus was erected for him in the church of Esens (now the St. Magnus Church) in 1473.

Issue

Children from his first marriage: * Wibet, married with Tyader of

Jever Jever () is the capital of the district of Friesland in Lower Saxony, Germany. The name Jever is usually associated with a major brand of beer, Jever Pilsener, which is produced there. The city is also a popular holiday resort. Jever was granted c ...

(no issue) * Hero of Dornum, better known as Hero Omken the Younger, married to Armgard, Duchess of Oldenburg and had issue * Frouwa, married with Edo Wiemken the Younger, chieftain of

(no issue) Children from his second marriage: * Ulrich of Dornum, married Essa of Oldersum (no issue) and secondly, Hyma of Grimersum * Sibo (no issue)

References

* East Frisia East Frisian chieftains 1420s births 1473 deaths Year of birth uncertain {{EastFrisia-stub