Instructions: Generate a correct and concise answer for the question based on the words in the context.
Input: Context : Margarethe von der Saale (1522 -- 6 July 1566), was a German lady in waiting and noble, morganatic spouse by bigamy to Philip I, Landgrave of Hesse.
Question : What is Margarethe von der Saale's spouse's name?
Output:
Philip I, Landgrave of Hesse