 She had traveled about before settling in Paris in the 1780s, where she lived as a notorious courtesan for several years before divorcing Grand to marry Talleyrand.Talleyrand was in no hurry to marry, and it was after repeated postponements that Napoleon obliged him in 1802 to formalize the relationship or risk his political career.While serving as a high level negotiator at the Congress of Vienna (1814-1815), Talleyrand entered into an arrangement with Dorothea von Biron, the wife of his nephew, the Duke of Dino.