You can helpexpand this article with text translated from the corresponding articles inWestern Frisian andGerman. (March 2025)Click [show] for important translation instructions. Machine translation, likeDeepL orGoogle Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. Youmust providecopyright attribution in theedit summary accompanying your translation by providing aninterlanguage link to the source of your translation. A model attribution edit summary isContent in this edit is translated from the existing Western Frisian Wikipedia article at [[:fy:Fokko Ukena]]; see its history for attribution. You may also add the template{{Translated|fy|Fokko Ukena}} to thetalk page. For more guidance, seeWikipedia:Translation.

Focko Ukena
Following his capture in the Battle of the Wild Fields Ocko tom Brok is brought before Focko Ukena. Romanticisedhistory painting by Tjarko Meyer Cramer, 1803
Reign	1427–1435
Predecessor	Ocko II tom Brok
Successor	Uko Fockena
Born	1360 or 1370
Died	1435 Appingedam
Spouse(s)	Theda of Reide Hiddeke Ripperda

Focko Ukena (1360^[1] or 1370 – 1435) was anEast Frisianchieftain (hovetling) who played an important part in the struggle between theVetkopers and Schieringers in the provinces ofGroningen andFriesland. Aside from this he was one of the leading figures in the resistance against the forts of stately authority in East-Frisia of thetom Brok family.

Medieval and early modernFrisia (roughly the modernDutch provinces of Groningen and Friesland, and theGerman coastal region ofEast Frisia) enjoyed what was known as theFrisian freedom, where virtually no state authority was exerted on the populace. This freedom was threatened from several sides.

In what is now East Frisia, the family of tom Brok was attempting to establish a dynasty. In what is now the province of Friesland, thecounts of Holland were expanding their influence. The city ofGroningen was also trying to expand its power. Through all of this the rivalry of theVetkopers and Schieringers played out.

Ukena was originally a military commander underKeno tom Brok. As such he defeatedSicka Sjaerda atNoordhorn in 1417, and conqueredDokkum in 1418. After the reconquest of Dokkum by the Schieringers, he disembarked atHindeloopen and defeated the Schieringers at the Palesloot.

Ukena tookStavoren and besiegedSloten, but was forced to withdraw by the troops ofJohn III, Duke of Bavaria, Count of Holland. Ukena was the first to sign thePeace of Groningen on 1 February 1422, which was aimed against all foreign lords. Next he battled with theHansa against theLikedelers, and expelled them fromEzumazijl and Dokkum. Afterwards he turned against tom Brok and was primarily active in East Frisia.

Ukena was unable to sustain his resistance to tom Brok, and eventually retreated to the castle ofDijkhuizen atAppingedam, which was the property of his second wife, HiddekeRipperda. He died there in 1435. His resistance eventually prevented tom Brok from taking the much-wanted County of East Frisia.

• 14th-century births
• 1435 deaths
• East Frisian chieftains
• History of Friesland
• History of Groningen (province)
• People from Leer (district)

• Articles with short description
• Short description is different from Wikidata
• Year of birth uncertain