William R. Day (1849–1923), American diplomat and Supreme Court Justice
William Shakespeare | William Laud | The Church of Jesus Christ of Latter-day Saints | William Blake | William | Green Day | William III of England | William Morris | William McKinley | William Howard Taft | William Ewart Gladstone | William the Conqueror | William S. Burroughs | William Shatner | William Faulkner | William Randolph Hearst | One Day International | William Wordsworth | William Tecumseh Sherman | William Hogarth | New Year's Day | Prince William, Duke of Cambridge | Boxing Day | Memorial Day | William Penn | Seventh-day Adventist Church | Labor Day | William Jennings Bryan | William Gibson | Doris Day |
The American Terra Cotta Tile and Ceramic Company was founded in 1881; originally as Spring Valley Tile Works; in Terra Cotta, Illinois, between Crystal Lake, Illinois and McHenry, Illinois near Chicago by William Day Gates.
Woodyates was the site of the training establishment of William Day, who sent out the winners of many important horse races including Foxhall, winner of the Grand Prix de Paris, Cesarewitch and Cambridgeshire in 1881.