The marriage date for Markus Dawid Reiner and Rebeka Rywka Drucker is incorrect on Dan Hirschberg's website since it (1) is much later than the birth of their son and (2) is the same year as the marriage date of their son.

Since their son was born in 1871, I assume that they were married between 1865 - 1870.

Children:

1. Efroim Hirsch Reiner, b. April 6, 1871. Married Ruchel Goldschneider in 1894.

http://www.ics.uci.edu/~dan/genealogy/Krakow/Families/Drucker.html