Provisional sub-clan designation: Napoleonic-generation Porges sibship (Prague, b. ca. 1810–1820). A reconstructed but not yet formally validated multi-sibling structure spanning four out-married Porges sisters and one named brother.

This entry consolidates two near-contemporaneous obituaries plus the named-sibling testimony of one of them. The reconstruction rests on the strong but unproven hypothesis that Sara Marie Oesterreicher née Porges (†1887) and Sarah Teweles née Porges (†1891) were sisters, with three additional siblings named in the 1891 notice (Samuel Porges, Resie Löwy née Porges, Clara Thorsch née Porges).

The 1891 notice provides the first complete Porges sibship of the Napoleonic generation in this corpus — four siblings of the same parental couple, the parents being plausibly born ca. 1780–1800 and therefore representing the surname-fixing cohort following the patent of Joseph II (1787).

Father Porges (b. ca. 1780–1795, identity to be determined) ⚭ mother (née ?). Likely children:

Sara Marie Oesterreicher née Porges (b. ca. 1813/14, d. Prague 23/10/1887, in her 74th year, of Altersschwäche). Buried Wolschan / Olšany Israelite Cemetery 25/10/1887. Married a Mr. Oesterreicher (predeceased before 1887). Three sons (Jos. St., Karl Ferd., Ludwig Ernst) and four daughters (Rosa Lederer, Franziska Markus, Mathilde Hauser, Wilhelmine Oesterreicher). Sons-in-law: Josef Lederer. Daughters-in-law: Antonie née Landsmann (m. Karl Ferd.), Rosa née Katz (m. Ludwig Ernst). Nine named grandchildren: Alis, Wilma, Hugo, Emil Markus; Ida, Ernestine, Hedwig, Herrmann Oesterreicher; Lilly Oesterreicher.

Sarah Teweles née Porges (b. ca. 1814/15, d. Prague 25/11/1891, in her 77th year, of Altersschwäche). Buried New Israelite Cemetery, Wolschan, 27/11/1891. Married a Mr. Teweles (predeceased before 1891). Four sons (Abraham, Dawid, Simon, Efraim L. Teweles) and three daughters (Anna Knöpfelmacher, Marie Wantoch, Caroline Kahn). Sons-in-law: Rabbiner Salomon Knöpfelmacher (rabbi son-in-law, observant register), Samuel Wantoch. Daughters-in-law: Josefine née Sachs, Anna née Schnabel, Cäcilie née Abeles, Emilie née Zelezny. Note: the spelling « Sarah » with final h, the son's name « Efraim » (pure Hebraic), and the rabbinical son-in-law together situate this branch in the more religiously-traditional Prague Jewish bourgeoisie.

Samuel Porges (alive 1891) — the only male Porges named in the 1891 sibling list. His descendants would perpetuate the Porges patronym from this sibship. His own obituary (post-1891) is a top research priority — likely a candidate father for several later 19th-century Prague Porges figures.

Resie Löwy née Porges (alive 1891) — married Mr. Löwy (Löwy is one of the most common Prague Jewish surnames).

Clara Thorsch née Porges (alive 1891) — married Mr. Thorsch (an identifiable Bohemian-Jewish merchant surname).

Notes on the reconstruction

Sara Marie 1887 is not named among Sarah Teweles's surviving siblings in the 1891 notice — which is fully consistent with her having been a deceased sister (the standard convention is to name only living siblings). This strengthens rather than weakens the sister hypothesis.

Decisive verification would require locating an obituary of Samuel Porges, Resie Löwy or Clara Thorsch that names both Sara Marie and Sarah as predeceased sisters, OR a later obituary of an Oesterreicher or Teweles child that names a sibling on the other side as a first cousin.

The Cäcilie Teweles née Abeles entry (daughter-in-law of Sarah Teweles) reinforces the multi-generational Abeles–Porges alliance already documented elsewhere in the corpus (Sub-clan R / Příbram with Babette Porges née Abeles; Sub-clan Y2 with Hedwig Reismann ⚭ Josef Abeles).

Source: obituaries published in Prager Tagblatt (Prague, 1878–1938).