b. John Coolidge Adams (1947- ) a minimalist American composer, won the Pulitzer Prize for his choral work based on the 9/11 destruction of the World Trade Center, "On the Transmigration of Souls." A composer of operas, he is most widely known for his minimalist opera "Nixon in China."
c. John Couch Adams (1819–1892), a British mathematician and astronomer, predicted the existence of the planet Neptune, solely on the basis of mathematics and the laws of Newton and Kepler. The Royal Astronomical Society later awarded him its Gold Medal.
d. John Quincy Adams (1767–1848) 6th president of the United States and son of the 2nd, distinguished himself as an early opponent of slavery. But he was a one-term president, having entered office under the cloud of a shady bargain involving the electoral college. He died of a stroke while serving in Congress, in the same room as the young Abraham Lincoln who, unfortunately, had never the time to know and learn from him.