Question: When did Princess Pauline Of Saxe-Weimar-Eisenach's husband die?
Answer: 20 November 1894

She was a daughter of Prince Hermann of Saxe-Weimar-Eisenach and Princess Augusta of Württemberg. Karl August, Hereditary Grand Duke of Saxe-Weimar-Eisenach (31 July 1844 – 20 November 1894) was a German prince and Hereditary Grand Duke ("Erbgroßherzog") of Saxe-Weimar-Eisenach.