From the English Wikipedia page 
Burtnieki Municipality (Latvian: Burtnieku novads) is a municipality in Vidzeme, Latvia. The municipality was formed in 2006 by merging Vecate parish and Matīši parish. In 2009 it absorbed Trikāta parish, Burtnieki parish, Ēvele parish, Rencēni parish and Valmiera parish the administrative centre being Matīši.
More information on the Latvian Wikipedia page