Amt Porz
The settlement of Porz dates from the 11th century, but it was Bensburg castle that became the seat of one of the original eight bergisch Ämter. The administrative seat of the Amt eventually moved to Porz, but a court remained in Bensburg. I cannot pinpoint when the name of the Amt changed—it probably occurred gradually. I assume that the change was complete by 1521, when the database starts. Aside from Porz and Bensburg, Freiheit Mülheim was the only other fully bergisch subdivision completely within the Amt, which covered most of modern Cologne east of the Rhein (but not Deutz), the city of Bergisch Gladbach, and Gemeinde Odenthal.
Gericht Rösrath did not fall entirely within Amt Porz. Only the villages in Amt Porz are listed below—the rest were in Amt Lülsdorf. Three Gerichte in Amt Porz (Dünnwald, Paffrath, and Flittard-Stammheim) were administered jointly with subjects of the Imperial City of Cologne and so are placed in a country with the simplified name of Berg\Cologne.
Beginning in 1631, Gericht Odenthal became a hereditary Herrschaft within Amt Porz owned by the Metternich family. The original lord seems to have been a citizen of the Imperial City of Cologne, but he held lordships in the Archbishopric of Cologne and various Wittelsbachian entities. I think that given the geographic distribution of his lordships, it makes the most sense to use the simplified country name of Berg-Metternich for Odenthal.
List of villages in Obergericht Bensburg
- Bensberg 1521 - 1806
- Bergisch Gladbach 1521 - 1806
- Brück [Cologne] 1521 - 1806
- Dürscheid 1521 - 1806
- Gronau 1521 - 1806
- Herkenrath [B. Gladbach] 1521 - 1806
- Immekeppel 1521 - 1806
- Merheim 1521 - 1806
- Rath [Cologne] 1521 - 1806
- Refrath 1521 - 1806
- Sand [B. Gladbach] 1521 - 1806
- Schönrath 1521 - 1806
- Thurn 1521 - 1806
- Wichheim 1521 - 1806
List of villages in Hauptgericht Porz
- Eil 1521 - 1806
- Elsdorf [Cologne] 1521 - 1806
- Ensen 1521 - 1806
- Heumar 1521 - 1806
- Langel 1521 - 1806
- Libour 1521 - 1806
- Lind 1521 - 1806
- Niederzündorf 1521 - 1806
- Oberzündorf 1521 - 1806
- Porz 1521 - 1806
- Urbach 1521 - 1806
- Wahn 1521 - 1806
- Westhoven 1521 - 1806
List of villages in Freiheit Mülheim
- Mülheim am Rhein 1521 - 1806
List of villages in Gericht Rösrath (Amt Porz)
- Altenrath 1521 - 1806
- Scheiderhöhe 1521 - 1806
List of villages in Gericht Flittard-Stammheim
- Flittard 1521 - 1806
- Stammheim 1521 - 1806
List of villages in Gericht Dünnwald
- Dünnwald 1521 - 1806
List of villages in Gericht Paffrath
- Hebborn 1521 - 1806
- Paffrath 1521 - 1806
List of villages in Gericht/Herrschaft Odenthal
- Blecher 1521 - 1806
- Breidbach 1521 - 1806
- Grimßgewalt 1521 - 1806
- Odenthal 1521 - 1806
- Scherf 1521 - 1806
Chronological list of countries to which the Gerichte of Dünnwald, Paffath, and Flittard-Stammheim belonged
Chronological list of countries to which Gericht/Herrschaft Odenthal belonged
- Duchy of Jülich-Berg (in personal union with Cleves) 1521 - 1614
- Duchy of Julich-Berg (adm. Metternich) 1614 - 1806