This is her brief Wikipedia article: "Princess Elisabeth of Stolberg-Roßla (23 July 1885 at Roßla, Grafschaft Stolberg-Roßla–16 October 1969 in Eutin, Schleswig-Holstein, Germany was the second wife of Duke Johann Albrecht of Mecklenburg, Regent of Mecklenburg-Schwerin and of the Duchy of Brunswick.
She was the daughter of Prince Botho of Stolberg-Roßla and Princess Hedwig of Ysenburg und Büdingen.
Princess Elizabeth married Johann Albrecht on 15 December 1909, a year after the death of the Duke's first wife Elisabeth Sybille of Saxe-Weimar-Eisenach. Their marriage was childless. After her husband's death in 1920, Elisabeth re-married at Ludwigslust in (Groß-)Herzogtum Mecklenburg-Schwerin to her first husband's half-brother Duke Adolf Friedrich of Mecklenburg. She died in Eutin, Schleswig-Holstein on 16 October 1969, only two months after the death of her second husband."