| 42721 | April 13 | Death | 548 – Lý Nam Đế, Vietnamese emperor (b. 503) |
| 42722 | April 13 | Death | 799 – Paul the Deacon, Italian monk and historian (b. 720) |
| 42723 | April 13 | Death | 814 – Krum, Bulgarian ruler |
| 42724 | April 13 | Death | 1093 – Vsevolod I of Kiev (b. 1030) |
| 42725 | April 13 | Death | 1138 – Simon I, Duke of Lorraine (b. 1076) |
| 42726 | April 13 | Death | 1592 – Bartolomeo Ammannati, Italian architect and sculptor (b. 1511) |
| 42727 | April 13 | Death | 1612 – Sasaki Kojirō, Japanese samurai (b. 1585) |
| 42728 | April 13 | Death | 1635 – Fakhr-al-Din II, Ottoman prince (b. 1572) |
| 42729 | April 13 | Death | 1638 – Henri, Duke of Rohan (b. 1579) |
| 42730 | April 13 | Death | 1641 – Richard Montagu, English bishop (b. 1577) |
| 42731 | April 13 | Death | 1695 – Jean de La Fontaine, French author and poet (b. 1621) |
| 42732 | April 13 | Death | 1716 – Arthur Herbert, 1st Earl of Torrington, English admiral and politician (b. 1648) |
| 42733 | April 13 | Death | 1722 – Charles Leslie, Irish priest and theologian (b. 1650) |
| 42734 | April 13 | Death | 1793 – Pierre Gaspard Chaumette, French botanist, lawyer, and politician (b. 1763) |
| 42735 | April 13 | Death | 1794 – Nicolas Chamfort, French playwright and poet (b. 1741) |
| 42736 | April 13 | Death | 1826 – Franz Danzi, German cellist, composer, and conductor (b. 1763) |
| 42737 | April 13 | Death | 1853 – Leopold Gmelin, German chemist and academic (b. 1788) |
| 42738 | April 13 | Death | 1853 – James Iredell, Jr., American lawyer and politician, 23rd Governor of North Carolina (b. 1788) |
| 42739 | April 13 | Death | 1855 – Henry De la Beche, English geologist and palaeontologist (b. 1796) |
| 42740 | April 13 | Death | 1868 – Tewodros II of Ethiopia (b. 1818) |
| 42741 | April 13 | Death | 1880 – Robert Fortune, Scottish botanist and author (b. 1813) |
| 42742 | April 13 | Death | 1882 – Bruno Bauer, German historian and philosopher (b. 1809) |
| 42743 | April 13 | Death | 1886 – John Humphrey Noyes, American religious leader, founded the Oneida Community (b. 1811) |
| 42744 | April 13 | Death | 1890 – Samuel J. Randall, American captain, lawyer, and politician, 33rd Speaker of the United States House of Representatives (b. 1828) |
| 42745 | April 13 | Death | 1909 – Whitley Stokes, Irish-English lawyer and scholar (b. 1830) |
| 42746 | April 13 | Death | 1910 – William Quiller Orchardson, Scottish-English painter and educator (b. 1835) |
| 42747 | April 13 | Death | 1911 – John McLane, Scottish-American politician, 50th Governor of New Hampshire (b. 1852) |
| 42748 | April 13 | Death | 1911 – George Washington Glick, American lawyer and politician, 9th Governor of Kansas (b. 1827) |
| 42749 | April 13 | Death | 1912 – Takuboku Ishikawa, Japanese poet and author (b. 1886) |
| 42750 | April 13 | Death | 1918 – Lavr Kornilov, Russian general (b. 1870) |