Puzzle - Abram Swartz

Abraham Martin Schwartz is listed as father's name on both the Manhattan marriage certificate [3] and NY death certificate [5] of my grandmother Sarah Schwartz.  Sarah told her children that she arrived in New York City at age 16, following her father's death and mother's subsequent remarriage; ship records [1,2] indicate Sarah emigrated from Austria to NY in June 1900.

    Schwartz, Abraham Martin    ___  Aus - <1900 Aus      died before Sarah immigrated

    Reich, Beile                            ___  Aus - <1905 Aus      granddaughter Beile born 1905

          Sarah                               1884 Aus -   1940 NYC          my grandmother

Sarah was born in Galicia, like her husband, per her children's NY birth records [4].  Her town of origin only appears on NY arrival record & Rotterdam departure record [1,2], listed in both places as "Wolhein" which is not found in JewishGen databases, or recognized by anyone on JewishGen lists.

Her arrival contact is listed as cousin Louis Reich [2], born in Austria per census 1900-1915.  Louis dies young, before WW1 draft, and no town of origin found elsewhere.  Louis had a younger brother Morris, who immigrated after Louis, and upon arrival in New York, lived with Louis and his family. Morris was born in Austria per census 1900-1915, and his WW1 draft registration lists his town of origin as Stari Sambor.

Sarah's gravestone shows her father's name, in Hebrew, as Mordecai.

Questions:
   ? when & where died
   ? when & where married
   ? when & where born
   ? parents names
   ? children's names besides Sarah

Records not found:

Records found:
   1900 Rotterdam departure record - Sara
   1900 NY arrival record - Sarah Schwartz, lists contact as cousin Louis Reich

   1905 NY marriage certificate - Sarah Schwartz, lists mother's maiden name = Beile Reich
   1905 NY birth certificate - Bella Storck, parents Sarah Schwartz & Herman Storck

   1940 NY death certificate - Sarah Schwartz, lists mother's name = Beile Schwartz Kugel