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There is an article from the New York Times 09.03.1905 about Fritz Grawert-Zellin.
The English text is already quoted in the German text, please look it up there.
In 1910 Friedrich Carl Heinrich Grawert (=Fritz Grawert-Zellin) received a patent for a propeller for airplanes and sea planes.
Exhibited at the patent archive of the Otto Lilienthal Museum, Angklam, Mecklemburg-Vorpommern.
Supposedly he invented the first airplane, that could land on water.
In 1911 Richard(?) Grawert built a amphibious water plane, that was able to land on water, which was “supposed to have made a few jumps at the Berlin-Tempelhof airfield”.
A photo of this is exhibited at the German Museum in Berlin. I have a copy.
This was possibly the son of Fritz or just a confusion of given names.
(further details = see capital Neumark).
Theodor Grawert, a cousin of Fritz, was Royal Music Director and Professor at the University for Music in Berlin. (details = see Neumark).
Eduard Grawert (1808 – 04.05.1864) was a music teacher and a well known painter for portraits and hunting scenes in Berlin.
Well known: “Kaiser Wilhelm I as hunter in a red coat on a horse”. “Citizens guard the chamber of Friedrich Wilhelm IV, 1848”.
He is mentioned in the book by Joachim Grossmann:”Leben und Arbeit von Malernin Preussen 1786-1850” as well as Georg Kaspar Nagler 1837.
The Art Gallery of Bremen exhibited pictures from him under the title:
“Berliner Biedermeier” in 1967.
Martin Grawert has invested months of work to extract all Grawert’s from
Berliner Adressbuechern von 1799-1850 (158 persons) and has also gone through the Altberliner Taufregister im Landeskirchlichen Archiv, Berlin (another 59, but partially the same persons as above).
They came from all areas of the population..
I myself have gone through the official website of “The church of Jesus Christ of Latter-day Saints”.
In these comparatively disappointing data I found 86 individual records of Grawert’s.
As these birth certificates include the names of father and mother I could find altogether:
Lübeck: 5 persons from 1385-1469
Nenndorf: 4 persons from 1518-1614 (Hans Lamsting etc.)
Prignitz/Altmark: 7 persons from 1570-1704
Berlin: 51 persons from 1725-1873
Neumark: 26 persons from 1734-1864 (mostly from Koenigsberg/Neumark)
East Prussia: 5 persons from 1749-1754 (Johann Joachim and 4 of his children)
Madgeburg: 3 persons from 1828-1832 (a father and 2 children)
3 from Koblenz, 3 from Pommerania, 2 each Westphalia and Mecklemburg,
1 Schleswig Holstein, 1 Sachsen Anhalt, 2 “von Grawert’s”.
Even though these data are incomplete, the years above show the same path:
Lübeck – Lower Saxony - Altmark – Berlin – Neumark and East Prussia.