So far as Rupert was concerned, the visit had not been, from the mother's point of view, a success. The only one of her brother's schemes for the boy's advantage of which she approved, unhappily commended itself very little to Rupert himself; this was no less than the time-honoured device of marrying him to an heiress. The lady selected was the daughter of the Huguenot Duc de Rohan, and in September 1636 the Elector had written to his mother: "Concerning my brother Rupert, M. de Soubise hath made overture that, with your Majesty's and your brother's consent, he thinks M. de Rohan would not be unwilling to match him with his daughter.... I think it is no absurd proposition, for she is great both in means and birth, and of the religion."[34] The death of the Duc de Rohan delayed the conclusion of the treaty, which dragged on for several years. In 1638 King Charles renewed relations with the widowed Duchess, through his Ambassador at Paris, Lord Leicester. "For Prince Robert's service, I represented unto her as well as I could, how hopeful a prince he was, and she said she had heard much good of him, that he was very handsome, and had a great deal of wit {31} and courage,"[35] wrote the Ambassador. But Cardinal Richelieu was by no means willing to let such a fortune as that of the Rohans, fall to a heretic foreigner, and without his consent, and that of Louis XIII, nothing could be done. The difficulties in the way were great, and though the Duchess was well inclined to Rupert, both on account of his religion and of his Royal blood, she was not blind to the fact that neither of these would support either himself or his family. He would, she supposed, settle down in France, but great though her daughter's fortune was, it would not, she declared, maintain a Royal prince in Paris; and she desired to know what King Charles would do for his nephew. Leicester could only reply vaguely that the King would "take care" of his nephew, and of any future children. He was, however, admitted to an interview with the young lady, whom he facetiously told, that he "came to make love unto her, and that, if it were for myself, I thought she could hardly find it in her heart to refuse me, but it being for a handsome young prince, countenanced by the recommendation of a great king, I did take upon myself to know her mind.... She gave me a smile and a blush, which I took for a sufficient reply."[36]