 Complete the following phrase:  In her will, Mary asked the King to take care of the interests of her 10-year-old son, whose sole guardian was now his grandmother Amalia. In 1672, after several years of confrontation with republican leaders in the Netherlands, 21-year-old William was nevertheless elected stadtholder of five provinces, starting with Holland on 4 July, and named commander-in-chief. Five years later, he married his cousin Mary, the daughter of James II and Anne Hyde. In 1688, with the support of English Protestants, William 