The Swedish von Knorring Family Society
- Information about the society for members of the von Knorring family, about genealogic research tracing the family's roots back to the 11th century, family history and coat of arms.
- http://vonknorring.com

Österholm Genealogy
- About the surname Österholm and its derivation Osterholm, its origins and family trees.
- http://www.osterholm.info/

Niklas Lindberg's Genealogy
- Personal genealogy pages with searchable databases.
- http://www.genealogiq.net/niklin/

Johansson, Bertil
- Genealogy-research about the Bäckman- and Widemark- families with ancestors in Södermanland, Östergötland and Värmland.
- http://www.algonet.se/~bertil_j/english/english.htm

Romlin, Mats
- Genealogy of the Romlin family.
- http://home.swipnet.se/Romlin_genealogi

Antavla
- Family tree on Ståhl, Magnusson and Sundqvist.
- http://hem.passagen.se/borjstah/SITEMAPE.HTM