The House of Nassau split between the Ottonian and Walramian lines in 1255. The Ottonian lands were partitioned on multiple occasions, but were reunited on at least two—once in 1561 and again in 1743. I define the Ottonian region as the territory within the reunited Principality of Nassau-Orange in 1806, when it was dismantled. I also include the County of Holzappel-Schaumburg (which passed from Nassau hands into Ascanian hands prior to 1806), the village of Wasenbach (which was never Nassau territory, but was surrounded on three sides by Schaumburg), and the condominia of Burbach, Neunkirchen, Kirberg, and Löhnberg (in all of which Ottonian Nassau entities participated).
I start the data base at different times, depending on the original country:
- 1561 for all villages entirely in Ottonian lands when they were consolidated into a unified county;
- 1564 for all villages assigned to Nassau when the former County of Dietz was divided up with Trier;
- 1597 for villages entirely or partially in Leiningen-Westerburg, when the Schaumburg line inherited the county;
- 1605 for villages entirely or partially in Walmerian hands when they were consolidated into a unified county (Nassau-Saarbrücken).
I end the data base in 1806 when the Holy Roman Empire was terminated and all of the region except Siegen was assigned to the Duchy of Nassau—a Napoleonic client state. Siegen was absorbed by the Kingdom of Prussia.
Sources for the Ottonian Nassau region
Countries
In Ottonian Nassuvian Germany
- Dillenburg County/Principality of Nassau-Dillenburg
- Beilstein County of Nassau-Beilstein
- Hadamar County/Principality of Nassau-Hadamar
- Siegen County of Nassau-Siegen
- Siegen-Hilchenbach County/Principality of Nassau-Siegen-Hilchenbach)
- Siegen (Lower) County/Principality of Nassau-Siegen (Calvinist line)
- Siegen (Upper) County/Principality of Nassau-Siegen (Catholic line)
- Siegen (Upper)-Bonn Principality of Nassau-Siegen (Catholic line; adm. Archbishopric of Cologne)
- Dietz County/Principality of Nassau-Dietz
- Orange-Nassau Principality of Orange-Nassau
- Holzappel-Dillenburg County of Holzappel (in personal union with Nassau-Dillenburg)
- Schaumburg-Dillenburg Principality of Nassau-Schaumburg (in personal union with Nassau-Dillenburg)
- Schaumburg Principality of Nassau-Schaumburg
in Walmerian Nassuvian Germany
- Weilburg County/Principality of Nassau-Weilburg
- Saarbrücken County of Nassau-Saarbrücken
in Lower Noble, Ascanian, Runkelian, or Löwensteinian Germany
- Holzappel County of Holzappel
- Holzappel-Schaumburg Principality of Holsappel-Schaumburg
- Holzappel-Schaumburg-Hoym Principality of Holzappel-Schaumburg (in personal union with Anhalt-Hoym)
- Wied-Runkel County of Wied-Runkel
- Leiningen-Westerburg County of Leiningen-Westerburg
- Virneburg-Mudersbach County of Virneburg (adm. Mudersbach)
- Virneburg-Kronberg County of Virneburg (adm. Kronberg)
- Virneburg-Boos von Waldeck County of Virneburg (adm. Boos von Waldeck)
Condominia
Kirberg Coprimary & Coprimary
- Dillenburg\Saarbrücken County of Nassau-Dillenburg & County of Nassau-Saarbrücken
- Hadamar\Saarbrücken County/Principality of Nassau-Hadamar & County of Nassau-Saarbrücken
- Hadamar\Usingen Principality of Nassau-Hadamar & County/Principality of Nassau-Usingen
- Dietz\Usingen Principality of Nassau-Dietz & Principality of Nassau-Usingen
- Orange-Nassau\Usingen Principality of Orange-Nassau & Principality of Nassau-Usingen
Burbach Primary (adm. shared with Secondary)
- Dillenburg\Sayn County of Nassau-Dillenburg (adm. shared with Sayn-Sayn)
- Dillenburg\Wittgenstein-Sayn County of Nassau-Dillenburg (adm. shared with Sayn-Wittgenstein-Sayn)
- Beilstein\Wittgenstein-Sayn County of Nassau-Beilstein (adm. shared with Sayn-Hachenburg)
- Dillenburg\Hachenburg County/Principality of Nassau-Dillenburg (adm. shared with Sayn-Hachenburg)
- Dietz\Hachenburg Principality of Nassau-Dietz (adm. shared with Sayn-Hachenburg)
- Orange-Nassau\Hachenburg Principality of Orange-Nassau (adm. shared with Sayn-Hachenburg)
- Orange-Nassau\Weilburg Principality of Orange-Nassau (adm. shared with Nassau-Weilburg)
Neunkirchen Primary (adm. shared with Secondary)
- Sayn\Dillenburg County of Sayn-Sayn (adm. shared with Nassau-Dillenburg)
- Wittgenstein-Sayn\Dillenburg County of Sayn-Wittgenstein-Sayn (adm. shared with Nassau-Dillenburg)
- Wittgenstein-Sayn\Beilstein County of Sayn-Wittgenstein-Sayn (adm. shared with Nassau-Beilstein)
- Hachenburg\Dillenburg County of Sayn-Hachenburg (adm. shared with Nassau-Dillenburg)
- Hechenburg\Dietz County of Sayn-Hachenburg (adm. shared with Nassau-Dietz)
- Hachenburg\Orange-Nassau County of Sayn-Hachenburg (adm. shared with Orange-Nassau)
- Weilburg\Orange-Nassau Principality of Nassau-Weilstein (adm. shared with Orange-Nassau)
Birlenbach Primary (adm. shared with Secondary)
- Dillenburg\Westerburg County of Nassau-Dillenburg (adm. shared with Leiningen-Westerburg)
- Dietz\Westerburg County of Nassau-Dietz (adm. shared with Leiningen-Westerburg)
Löhnberg Primary (adm. shared with Secondary)
- Beilstein\Saarbrücken County of Nassau-Beilstein (adm. shared with Nassau-Saarbrücken)
- Dietz\Saarbrücken County of Nassau-Dietz (adm. shared with Nassau-Saarbrücken)
- Dietz\Weilburg County/Principality of Nassau-Dietz (adm. shared with Nassau-Weilburg)
- Orange-Nassau\Weilburg Principality of Orange-Nassau (adm. shared with Nassau-Weilburg)
Subdivisions
- Dillenburg Stadt or Amt Dillenburg
- Haiger Stadt or Amt Haiger
- Herborn Stadt or Amt Herborn
- Ebersbach Amt Ebersbach
- Tringenstein Amt Tringenstein
- Driedorf Amt Driedorf
- Hadamar Stadt or Amt Hadamar
- Hadamar Quasi-Vogtei Hadamar
- Dehrn Dehrner Zent or Quasi-Vogtei Dehrn
- Ellar Amt Ellar
- Mengerskirchen Amt Mengerskirchen
- Ellar-Mengerskirchen Amt Ellar-Mengerskirchen
- Mengerskirchen-Ellar Amt Mengerskirchen-Ellar
- Winnen-Höhn Gericht Winnen-Höhn
- Stuhlgebiet Amt Stuhlgebiet
- Rennerod Amt Rennnerod
- Siegen Stadt Siegen
- Haingericht Gericht vorm Hain
- Netphen Amt Netphen
- Vierdorfschaften Amt der Vierdorfschaften
- Freudenberg Amt Freudenberg
- Hilchenbach Amt Hilchenbach
- Ferndorf Amt Ferndorf-Krombach
- Dietz Amt Dietz
- Dauborn Amt Dauborn
- Beilstein Amt Beilstein
- Beilstein Herrschaft Beilstein
- Westerwald Herrschaft zum Westerwald
- Marienberg Amt Marienberg
Holzappel-Schaumburg
- Esterau Gericht Esterau
- Isselbach Vogtei Isselbach
- Schaumburg Herrschaft Schaumburg
Walmerian Nassau (fully or partially)
Other Non-Nassuvian (fully or partially)
- Freier Grund
- Burbach Vogtei Burbach
- Neunkirchen Vogtei Neunkirchen
- Westerburg Herrschaft Westerburg
- Birlenbach Dorf Birlenbach
- Seck Dorf Seck
- Wassenbach Dorf Wasenbach