I can't wait for Seventeenth-Century Women's Dress Patterns: Book 1 (Womens Dress Patterns 1) to come out. Its available for pre-order discount at Amazon and looks so enticing. There is such a shortage of information for this period its not funny.
There is a 1630s bodice pattern available for purchase. As with all patterns, make sure you fit a toile before cutting into your good fabric.