April 12, 1947 – David Letterman, American talk show host
April 13, 1743 – Thomas Jefferson, 3rd President of the United States (d. 1826)
April 14, 1935 – Loretta Lynn, American singer/songwriter
April 15, 1912 – Kim Il-sung, President of North Korea (d. 1994)
April 16, 1867 – Wilbur Wright, American aviation pioneer (d. 1912)
April 17, 1967 – Liz Phair, American musician/songwriter
April 18, 1963 – Conan O’Brien, American comedian