Johann Paul Geycke (1726 – 1804 in Hamburg) was a Hamburg organ builder of the 18th century.
Geycke ran his own workshop in Hamburg. Georg Wilhelm Wilhelmy (1748–1806) was his journeyman. From 1765 onwards, Geycke succeeded in persuading the itzehoer organ builder Johann Daniel Busch (1735–1787) from Hamburg.[1]
His son Joachim Wilhelm Geycke (1768–1840) continued his father's workshop. His grandson was the Hamburg organ builder Christian Heinrich Wolfsteller (1830–1897), his son-in-law the organ builder Balthasar Wohlien (1745–1804) from the well-known Altonaer family of organ builders.[2]
| Year | Location | Building | class=unsortable | Picture ! | Manual | Stops | Notes |
|---|---|---|---|---|---|---|---|
| 1752 | Kirchwerder | St. Severini | II/P | Repair of the organ by Hinrich Speter (1641) | |||
| 1763 | Eppendorf | Sankt Johannis | Repair and take over maintenance.[3] | ||||
| 1765–76 / 1780 | Hamm | Dreifaltigkeitskirche | Maintenance of the organ from 1765 to 1776, in 1780 estimate for repair, then repair and renewal of some of the stops.[4] | ||||
| 1766/70–72 | Borstel (Jork) | Sankt Nikolai | II/P | 20 | 1766 Repairs: bellows, ducts, windchests, action, musical keyboards, tremulant and reeds are repaired. In 1770–72, the organ was completely rebuilt and moved to the west gallery; in addition, the organ received a new casing, two additional bellows, new channels, two new pedal chests, a new action, a new 16' Trombone and 8' Octave in the pedal were installed; the Cornet 2' (ped) is changed to the Trumpet 4'; the Principal 8' in the HW is foiled and the BW doors receive foiled blind pipes; all works receive a valve and the Zimbelsterns are installed in the bass towers.[5] | ||
| 1768 | Hamburg-Altstadt | Sankt Petri | Repair.[6] | ||||
| 1768 | St. Pauli | Pesthofkirche, Annenstraße | New building.[7] | ||||
| 1774–75 | Hamburg-Altstadt | Sankt Jacobi | IV/P | 60 | Repair and installation of a new console with four manuals.[8] → Schnitger organ (Hamburg) | ||
| 1777/1796 | Altona | Sankt Trinitatis | Repair.[9] | ||||
