Franz Joseph Leonards – Kölner Adress-Buch 1844
| Given name | Franz Joseph |
|---|---|
| Family name | Leonards |
| Occupation | Kaufmann, Firma Leonards & Comp., so wie Associé der Destillation von Eau de Cologne unter der Fa. Jean Maria Farina |
| Address | Rheingasse 23 |
| Place | Köln |
| GOV identifier | KOLOLNJO30LW |
| Book | Kölner Adress-Buch 1844 |
| page | 208 |
| Year | 1844 |