| 39511 | April 6 | Birth | 1818 – Aasmund Olavsson Vinje, Norwegian journalist and poet (d. 1870) |
| 39512 | April 6 | Birth | 1820 – Nadar, French photographer, journalist, and author (d. 1910) |
| 39513 | April 6 | Birth | 1823 – Joseph Medill, Canadian-American publisher and politician, 26th Mayor of Chicago (d. 1899) |
| 39514 | April 6 | Birth | 1826 – Gustave Moreau, French painter and academic (d. 1898) |
| 39515 | April 6 | Birth | 1851 – Guillaume Bigourdan, French astronomer and academic (d. 1932) |
| 39516 | April 6 | Birth | 1852 – Will Crooks, English trade unionist and politician (d. 1921) |
| 39517 | April 6 | Birth | 1855 – Charles Huot, Canadian painter and illustrator (d. 1930) |
| 39518 | April 6 | Birth | 1857 – Arthur Wesley Dow, American painter and photographer (d. 1922) |
| 39519 | April 6 | Birth | 1860 – René Lalique, French sculptor and jewellery designer (d. 1945) |
| 39520 | April 6 | Birth | 1861 – Stanislas de Guaita, French poet and author (d. 1897) |
| 39521 | April 6 | Birth | 1864 – William Bate Hardy, English biologist and academic (d. 1934) |
| 39522 | April 6 | Birth | 1866 – Felix-Raymond-Marie Rouleau, Canadian cardinal (d. 1931) |
| 39523 | April 6 | Birth | 1869 – Levon Shant, Armenian author, poet, and playwright (d. 1951) |
| 39524 | April 6 | Birth | 1878 – Erich Mühsam, German author, poet, and playwright (d. 1934) |
| 39525 | April 6 | Birth | 1881 – Karl Staaf, Swedish pole vaulter and hammer thrower (d. 1953) |
| 39526 | April 6 | Birth | 1884 – J. G. Parry-Thomas, Welsh race car driver and engineer (d. 1927) |
| 39527 | April 6 | Birth | 1886 – Athenagoras I of Constantinople (d. 1972) |
| 39528 | April 6 | Birth | 1886 – Walter Dandy, American physician and neurosurgeon (d. 1946) |
| 39529 | April 6 | Birth | 1886 – Osman Ali Khan, Asaf Jah VII, Indian ruler (d. 1967) |
| 39530 | April 6 | Birth | 1888 – Hans Richter, Swiss painter, illustrator, and director (d. 1976) |
| 39531 | April 6 | Birth | 1888 – Gerhard Ritter, German historian and academic (d. 1967) |
| 39532 | April 6 | Birth | 1890 – Anthony Fokker, Dutch engineer and businessman, founded Fokker Aircraft Manufacturer (d. 1939) |
| 39533 | April 6 | Birth | 1892 – Donald Wills Douglas, Sr., American businessman, founded the Douglas Aircraft Company (d. 1981) |
| 39534 | April 6 | Birth | 1892 – Lowell Thomas, American journalist and author (d. 1981) |
| 39535 | April 6 | Birth | 1894 – Gertrude Baines, American super-centenarian (d. 2009) |
| 39536 | April 6 | Birth | 1895 – Dudley Nichols, American director, producer, and screenwriter (d. 1960) |
| 39537 | April 6 | Birth | 1898 – Jeanne Hébuterne, French painter and author (d. 1920) |
| 39538 | April 6 | Birth | 1900 – Leo Robin, American composer and songwriter (d. 1984) |
| 39539 | April 6 | Birth | 1901 – Pier Giorgio Frassati, Italian activist (d. 1925) |
| 39540 | April 6 | Birth | 1902 – Julien Torma, French author, poet, and playwright (d. 1933) |