Bertha Jetta Stern

• Date/place of birth identified in Siegfried Wolf. Juden in Thüringen 1933-1945: Biographische Daten. (2000), vol 2, (unpaginated)
• Identified as first wife of Leopold Rosenstein, with date/place of marriage, see Wolf
• Identified as mother of Julius Rosenstein, see Wolf
• On 14 May 1921, Berta Rosenstein married Julius Stern in Bad Nauheim. Her son, Julius, subsequently took on the name Stern as his surname. [Source: Hesse, Germany, Marriages, 1874-1930 [database on-line]. Lehi, UT, USA: Ancestry.com Operations, Inc., 2016.]
• A Stolperstein has been laid for Bertha Stern, geb. Herz, in front of the.house in Rolandstr. 63, Köln. At the time, the stone was laid, it was not know that she had been transferred from the Lodz Ghetto to Chelmo Extermination Centre where she was murdered, and the Stolperstein does not include the date and place of her murder; see https://de.wikipedia.org/wiki/Liste_der_Stolpersteine_im_Kölner_Stadtteil_Neustadt-Süd and https://museenkoeln.de/NS-DOKUMENTAtionszentrum/default.aspx?sfrom=...

German National Archives, Memorial Book:
Stern, Bertha Jetta
née Herz
born on 29th April 1887 in Öhringen / - / Württemberg
resident of Köln
Deportation:
from Köln
22nd October 1941, Litzmannstadt (Lodz), ghetto
05th May 1942, Kulmhof (Chelmno), extermination camp
Place of death: Kulmhof (Chelmno), extermination camp

cf.: https://de.wikipedia.org/wiki/Liste_der_Stolpersteine_im_Kölner_Stadtteil_Neustadt-Süd