Question: Who is Prince Heinrich Xxxiii Reuss Of Köstritz's maternal grandfather?
Sentence (from "Princess Marie Alexandrine of Saxe-Weimar-Eisenach"): Through her mother, Marie was second-in-line to the Dutch throne after her nephew William Ernest, Grand Duke of Saxe-Weimar-Eisenach from 1900 to the birth of Princess Juliana in 1909.
Relevant evidence: No