Which First Lady is credited with effectively running the executive branch after Woodrow Wilson's stroke?

Which First Lady was born in Slovenia? Which First Lady was born in London, the first born outside the U.S.? Which First Lady was both the wife of one president and the mother of another? Barbara Bush was the wife of one president and the mother of which other president? Which political party did Abraham Lincoln belong to? Which political party did Franklin D. Roosevelt belong to? Which party was founded by Thomas Jefferson and James Madison? Which party did Alexander Hamilton and John Adams lead?