Sub-clan BX — matriarchal anchor: Rebekka Porges née Leipen (b. ca. 1825, d. 1898, age 73).

The most plausible reading of the obituary corpus identifies Rebekka with Katharina Porges née Leipen (Sub-clan BR matriarch named in the 1892 Mathilde Sgalitzer obituary) as the same person: "Rebekka" being the Hebrew/religious name and "Katharina" being the German civil name — a common dual-name convention in Bohemian-Jewish bourgeois society.

Identification with the Napoleonic Porges sibship matriarch

Rebekka Porges née Leipen is the wife of A.S. Porges (b. ca. 1818-19, †8 July 1891), a previously-unrecognised sixth member of the Napoleonic Porges sibship (brother of Sara Marie Oesterreicher †1887, Sarah Teweles †1891, Samuel Porges, Resie Löwy, Clara Thorsch).

Family — confirmed children

From the cross-correlation of the 1891 A.S. Porges obituary (naming children Moritz Porges, Alfred Porges, Mathilde Sgalitzer, Ottilie Sgalitzer) and the 1892 Mathilde Sgalitzer obituary (naming mother Katharina Porges née Leipen, brother Moritz, brother Alfred, sister Ottilie Sgalitzer née Porges, daughter Wilhelmine Sgalitzer):

• Moritz Porges (b. ca. 1845-1855, status uncertain by 1898 — possibly predeceased)

• Alfred Porges ⚭ Karoline / Carla Porges née Frey (daughter-in-law)

• Mathilde Sgalitzer née Porges (b. ca. 1850, †2 August 1892 in her 42nd year, Ebreichsdorf-Wien) ⚭ M. J. Sgalitzer; daughter Wilhelmine Sgalitzer

• Ottilie Sgalitzer née Porges ⚭ Carl Sgalitzer (brother of M. J. Sgalitzer)

The Mathilde + Ottilie marriages constitute a double Porges-Sgalitzer sister-marriage — two of Rebekka's daughters both married into the Sgalitzer family (M. J. and Carl, themselves brothers), reinforcing capital and social network across the two families.

Disambiguation from Adam S. Porges

Rebekka's husband A.S. Porges (b. ca. 1818-19) is a different person from Adam S. Porges of Prague (b. ca. 1822-23, †8 February 1892, gewesener Kaufmann; husband of Mina née Gerstl) — see Adam S. Porges page which correctly disambiguates these two homonymous patriarchs.

Cross-corpus implications

This identification consolidates Sub-clans BR and BX into a single matriarchal anchor (Rebekka = Katharina née Leipen). Combined with A.S. Porges' position as a sixth member of the Napoleonic sibship, this creates a three-generation reconstruction:

• Generation 1 (b. ca. 1780-1800): unknown Porges parental couple, the surname-fixing cohort of Bohemia
• Generation 2: Sara Marie Oesterreicher, Sarah Teweles, A.S. Porges (⚭ Rebekka née Leipen), Samuel Porges, Resie Löwy, Clara Thorsch — six named siblings of the Napoleonic generation (b. 1813-1819)
• Generation 3: Moritz, Alfred, Mathilde, Ottilie Porges (children of A.S. + Rebekka) and the multiple Oesterreicher / Teweles / Löwy / Thorsch descendants of the other five siblings

Holocaust trajectory

Sub-clan BX's third-generation descendants (b. ca. 1870-1900) would have been the prime Holocaust deportation cohort, ca. 38-68 in 1938. Wilhelmine Sgalitzer (Mathilde's daughter, b. ca. 1875-1880) is one specific search target. Cross-reference with the Auspitz Döbling family grave for any Sgalitzer or Porges-Frey descendant burials.

Source: obituaries published in Prager Tagblatt (Prague, 1878–1938) and Neue Freie Presse (Vienna, 1864–1939).