Battle of the Boarn

The Battle of the Boarn (West Frisian: Slach oan de Boarn Dutch: Slag aan de Boorne) was an eighth century battle between the Franks and the Frisians near the mouth of the river Boarn in what is now the Dutch province of Friesland.

Battle of the Boarn
Part of the Frisian–Frankish wars
The Boarn, Netherlands
Result Frankish victory, end of the Frisian kingdom
Frankish Empire Frisian kingdom
Commanders and leaders
Charles Martel King Poppo


In 734 a Frankish army commanded by Majordomo Charles Martel invaded Friesland in a campaign that was part of a series of ongoing wars and skirmishes between the Franks and the Frisians. Marching along the river Boarn the Frankish army reached the mouth of the river where it used to flow into the Bordine estuary or Middelsee. This estuary has since silted up and was claimed for agriculture during the 10th to 14th century.

The Frisians commanded by King Poppo used boats to land their army and surprise the Franks. However, the Frisian army was beaten and Poppo killed.[1] The Franks gained control of the Frisian lands west of the Lauwers estuary and the Frisians became vassals of the Franks apart from the tribes living in East Frisia in present-day Germany.


  1. ^ "Geschiedenis van het volk der Friezen". Archived from the original on 2009-06-08. Retrieved 2009-01-22.


  • Fredegarius, Liber Historiae Francorum

Coordinates: 53°04′36″N 5°47′38″E / 53.0768°N 5.7938°E / 53.0768; 5.7938