Jacob Nielsen was count of Northern Halland and a great-grandson of Valdemar II of Denmark. His father and grandfather had both held Halland as a county before him. Jacob received Halland in 1283, but switched allegiance to the King of Norway two years later and was declared an outlaw in 1287 after the murder of Eric V of Denmark.
- Citizenship
- Kingdom of Denmark
- Born
- 1201, 1250
- Died
- 1309
