Which World War II general, born in San Gabriel, California, in 1885, had a bull terrier named Willie?

Which Massachusetts-born painter created "Arrangement in Grey and Black No. 2", a portrait of Thomas Carlyle? Which Old West lawman, born in 1850, shot and killed Billy the Kid? Which French painter, born in Paris in 1859, created "A Sunday Afternoon on the Island of La Grande Jatte"? Which English economist, born in 1883, wrote "The General Theory of Employment, Interest and Money"? Which dictator, born in Braunau am Inn in 1889, owned a German shepherd named Blondi? Which Prohibition agent, born in 1903, led the "Untouchables" in Chicago and later cleaned up Cleveland? Which painter, born in Wyoming in 1912, created "Lavender Mist" and died in East Hampton, New York, in 1956? Which president, born in Milton, Massachusetts, in 1924, had a springer spaniel named Millie?