Uko Fockena
| Uko Fockena | |
|---|---|
| Spouse(s) | Heba von Dornum |
| Father | Focko Ukena |
| Mother | Theda of Rheide |
| Born |
c. 1408 possibly Oldersum |
| Died | 13 June 1432 near Suurhusen |
| Buried | Emden |
Uko Fockena (also known as: "Uko of Oldersum"; c. 1408, Oldersum (uncertain) – 13 June 1432 near Suurhusen) was an East Frisian chieftain of Moormerland and Emsigerland.
Uko was one of the sons of the East Frisian chieftain Focko Ukena (born: around 1370; died: 29 August 1436) and his wife Theda of Rheide (born c. 1365; died: before 1411).
In 1424 Uko acquired together with Udo Poppinga the farm tor Brake (also spelled to Brahe / Brae) in the Emsland region from the Squire Ecerd von der Bele. His brother-in-law Ocko II tom Brok (Ocko to Broke), chief of the Brokmerland asked the abbot of Werden, in a letter dated 17 September 1424, to enfeoff Uko with this farm and confirmed that Uko was by birth a free man, honest and genuine, with four free-born grandparents.
Between 1425 and 1427 Uko married Hebe (or Heba) of Dornum, a daughter of Lütet Attena of Dornum and Nesse and Ocka tom Brok, a daughter of Ocko I tom Brok. Documentary evidence exists that the heiress of this marriage was Theda Ukena (born: before 1432; died 17 September 1494), who married in 1455 Ulrich I Cirksena who was stadtholder of East Frisia and became the first Count of East Frisia in 1464.
In 1424 Uko and his father opposed the tom Brok family of East Frisian chieftains, who had transferred the village and castle of Oldersum to them in 1413. Ocko II tom Brok demanded from Focko the return of the castle and won a court case to that effect in the city of Groningen dated 6 June 1426. Focko rejected this decision and defeated Ocko in the Battle of Detern on 27 September 1426 and in the Battle of the Wild Fields on 28 October 1427. Thus, Focko Ukena became a pioneer of the principle of Frisian freedom.
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