MT, citing Michael Liebermann, says he was born to Samuel Nothmann and Mathilde Cohn on 12/06/1814, whereas JRI-Poland records the birth of Salomon to Samuel Schaya Nothmann and Magdalena Kohn in Langendorf on 26/01/1815.

In July 1815 Samuel Schayer and his family moved within the Tost district. The JRI-Poland records of this move name his wife, Magdalena geb. Cohn, and children
1. Isaac;
2. Hirschel;
3. Salomon;
4. Rosel;
5. Jette.

The enumeration of the siblings suggests that they are arranged in age order; certainly the three brothers are in their correct order. There is no evidence that the sisters are listed last because of their gender: other entries on the same page list female names before male names. If we assume that Rosel and Jette were the most recent additions to the family, then - barring triplets - Salomon must have been born before 1815 and Rosel must have been a twin of either Salomon or Jette.