In late 1108 or early 1109, King Henry V of Germany sent envoys to Normandy proposing that Matilda marry him, and wrote separately to her mother on the same matter. The match was attractive to the English king: his daughter would be marrying into one of the most prestigious dynasties in Europe, reaffirming his own, slightly questionable, status as the youngest son of a new royal house, and gaining him an ally in dealing with France. In return, Henry V would receive a dowry of 10,000 marks, which he needed to fund an expedition to Rome for his coronation as the Holy Roman emperor. The final details of the deal were negotiated at Westminster in June 1109 and, as a result of her changing status, Matilda attended a royal council for the first time that October. She left England in February 1110 to make her way to Germany.