Johannes Heyer – Kölner Adreß-Buch 1846
| Given name | Johannes |
|---|---|
| Family name | Heyer |
| Occupation | Werkmeister |
| Address | Kleiner Griechenmarkt 6 |
| Place | Köln |
| GOV identifier | KOLOLNJO30LW |
| Book | Kölner Adreß-Buch 1846 |
| page | 226 |
| Year | 1846 |
| Given name | Johannes |
|---|---|
| Family name | Heyer |
| Occupation | Werkmeister |
| Address | Kleiner Griechenmarkt 6 |
| Place | Köln |
| GOV identifier | KOLOLNJO30LW |
| Book | Kölner Adreß-Buch 1846 |
| page | 226 |
| Year | 1846 |