I've been adding notes to the parents connected to this Margaret and her sister Patience
Patience Downing
I believe these sisters are connected to the wrong parents. I've attached an article from William and Mary Quarterly that makes it clear that Capt. William Downing married his wife Margaret in 1679. That would have been after Margaret and Patience were born. Additionally, the children named for Capt. William Downing and his wife Margaret are: William, John, Thomas, Mary and an unnamed daughter. No Margaret or Patience are mentioned. My 'guess' would be the unnamed daughter might well have been named Margaret after the mother, but the birth date of 1670 for this Margaret would rule her out.