Hillary is from the Latin hilaris ("cheerful, joyful") — same root as "hilarious." Originally a male name (Saint Hilary of Poitiers, 4th c.); used for women from the 1960s. Hillary Rodham Clinton (born 1947) — first woman to become the presidential nominee of a major US political party (Democratic, 2016); won the popular vote by nearly 3 million but lost the Electoral College to Donald Trump. First Lady (1993-2001), US Senator from New York (2001-2009), US Secretary of State (2009-2013). Yale Law-educated lawyer who graduated 1973.
Subject of Living History (2003) and Hard Choices (2014) — her bestselling memoirs.
In Pythagorean numerology the letters of Hillary reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.