 Aikenhead was instructed to explain that James could not deviate from the 1517 Treaty by marrying a bride not a Princess without the consent of the Parliament of Scotland.As Francis I had once again firmly indicated to James V that a French princess of the royal family would not be available to him since Madeleine was too frail, the negotiation for his alternative marriage to Mary of Bourbon began again in earnest.On 3 June 1535, James V wrote from Stirling Castle to Francis I regarding his possible marriage to Madeleine, the treaty, and the alternative offer of Mary of Bourbon.