Answer
Sophie Dorothea, the mother of Grand Duke Konstantin Pavlovich, hailed from Württemberg, a region in present-day Germany known for its historical significance and cultural heritage. She was born into the House of Württemberg, a prominent German dynasty that ruled over the region for several centuries. Sophie Dorothea's upbringing and experiences within the Württemberg court undoubtedly shaped her identity and influenced her role as the mother of a Russian Grand Duke.