January
03 – birth of Grand Duke Wilhelm (1754)
10 – death of Ingeborg Alix, Princess of Schaumburg-Lippe, dtr of Grand Duke Friedrich August II (1996)
17 – birth of Grand Duke Peter I (1755)
23 – birth of Elimar, son of Grand Duke August I (1844)
27 – death of Grand Duchess Cecilia, 3rd wife of Grand Duke August I (1844)

February
02 – death of Grand Duchess Elisabeth, wife of Grand Duke Peter II (1896)
02 – birth of Sophia, daughter of Grand Duke Friedrich August II (1879)
08 – birth of Elisabeth Anne of Prussia, 1st wife of Grand Duke Friedrich August II (1857)
10 – marriage of Grand Duke Peter II to Elisabeth of Saxe-Altenburg (1852)
15 – birth of August, son of Grand Duke August I (1836)
18 – marriage(1) of Grand Duke Friedrich August II to Elisabeth Anne of Prussia (1878)
20 – death of Margarete, daughter of Grand Duke Friedrich August II (1882)
23 – birth of Adelheid of Anhalt-Bernburg-Schaumburg-Hoym, 1st wife of Grand Duke August I (1800)
24 – death of Grand Duke Friedrich August II (1931)
27 – death of Grand Duke August I (1853)

March
10 – birth of Ida of Anhalt-Bernburg-Schaumburg-Hoym, 2nd wife of Grand Duke August I (1804)
20 -death of Friederike, Baroness von Washington, daughter of Grand Duke August I (1891)
25 – birth of Friedrich August and Alexandrine, twin children of Grand Duke Friedrich August II (1900)
26 – death of Friedrich August and Alexandrine, twin children of Grand Duke Friedrich August II (1900)
26 – birth of Elisabeth of Saxe-Altenburg, wife of Grand Duke Peter II (1826)
29 – death of Sophia, Princess Eitel of Prussia, daughter of Grand Duke Friedrich August II (1964)
31 – death of Hereditary Princess Ida, wife of Grand Duke August I (1828)

April
03 – death of Hereditary Grand Duke Nikolaus, son of Grand Duke Friedrich August II (1970)
30 – death of August, son of Grand Duke August I (1837)

May
05 – marriage(3) of Grand Duke August I to Cecilia of Sweden (1831)
09 – birth of Georg, son of Grand Duke Peter I (1784)
19 – birth of Altburg Marie, daughter of Grand Duke Friedrich August II (1903)
20 – death of Queen Amalie of Greece, daughter of Grand Duke August I (1875)
21 – death of Grand Duke Peter I (1829)

June
06 – marriage of Grand Duke Peter I to Friederike of Württemberg (1781)
06 – death of Alexander, son of Grand Duke August I (1835)
08 – birth of Friederike, daughter of Grand Duke August I (1820)
13 – death of Grand Duke Peter II (1900)
16 – birth of Alexander, son of Grand Duke August I (1834)
16 – death of Altburg Marie, Hereditary Princess of Waldeck and Pyrmont, dtr of Friedrich August II (2001)
22 – birth of Cecilia of Sweden, 3rd wife of Grand Duke August I (1807)
24 – marriage(2) of Grand Duke August I to Ida of Anhalt-Bernburg-Schaumburg-Hoym (1825)
27 – birth of Georg Ludwig, son of Grand Duke Peter II (1855)

July
02 – death of Grand Duke Wilhelm (1823)
08 – birth of Grand Duke Peter II (1827)
13 – birth of Grand Duke August I (1783)
20 – birth of Ingeborg Alix, daughter of Grand Duke Friedrich August II (1901)
24 – marriage(1) of Grand Duke August I and Adelheid of Anhalt-Bernburg-Schaumburg-Hoym (1817)
27 – birth of Friederike of Württemberg, wife of Grand Duke Peter I (1765)

August
10 – birth of Elisabeth Alexandrine of Mecklenburg-Schwerin, 2nd wife of Grand Duke Friedrich August II (1869)
10 – birth of Hereditary Grand Duke Nikolaus, son of Grand Duke Friedrich August II (1897)
28 – death of Hereditary Grand Duchess Elisabeth Anne, 1st wife of Grand Duke Friedrich August II (1895)

September
03 – death of Grand Duchess Elisabeth Alexandrine, 2nd wife of Grand Duke Friedrich August II (1955)
13 – death of Adelheid of Anhalt-Bernburg-Schaumburg-Hoym, 1st wife of Grand Duke August I (1820)

October
17 – death of Elimar, son of Grand Duke August I (1895)
24 – marriage(2) of Grand Duke Friedrich August II to Elisabeth Alexandrine of Mecklenburg-Schwerin (1896)
31 – birth of Margarete, daughter of Grand Duke Friedrich August II (1881)

November
11 – Abdication of Grand Duke Friedrich August II and the end of the monarchy of Oldenburg (1918)
16 – birth of Grand Duke Friedrich August II (1857)
24 – death of Friederike of Württemberg, wife of Grand Duke Peter I (1785)
30 – death of Georg Ludwig, son of Grand Duke Peter II (1939)

December
21 – birth of Amalie, daughter of Grand Duke August I (1818)
27 – death of Georg, son of Grand Duke Peter I (1812)