| 12 Jul 1897 | Born in Königsberg, East Prussia |
| 1 Dec 1902 | Ruth Herrmann born in Königsberg, East Prussia |
| 1913 | Begins studies in wood sculpture at State Art School (Staatliche Kunst- und Gewerkschule), Königsberg |
| 3 Mar 1916 | Inducted into the German army |
| 16 Sep 1916 | Captured in Galicia (SW Ukraine) between the Narajowka and Zlota-Lipa rivers after suffering a head wound on the left side;
begins 20 months labor in a Ukrainian salt mine |
| 24 Apr 1918 | Freed from Russian internment in Ukraine |
| 24 May 1918 | On military leave to Königsberg until 18 Jul 1918 |
| 25 Oct 1918 | Fighting north of Reims until 4 Nov 1918 |
| 5 Nov 1918 | Retreat from Antwerp - Meuse positions until the armistice, 11 Nov 1918 |
| 18 Jan 1919 | Returns to Königsberg |
| 19 Jul 1919 | Ends military service, work in Hannover and Düsseldorf |
| 1920 | Returns to the Kunst- und Gewerkschule under full scholarship and studies under Hermann Brachert and Franz Andreas Threyne |
| 1926 | Practices architectural sculpture until 1929 and carries out works under Erich Schmidt-Kestner of the Kunst- und Gewerkschule and Stanislaus Cauer of the Art Academy (Kunstakademie) |
| 1 Oct 1926 | Marries Ruth Herrmann in Königsberg |
| 6 Jan 1928 | US Immigration visa 6236 issued, left to expire |
| 4 Jan 1929 | US Immigration visa 9292 issued to Ruth and 9293 issued to William |
| 15 Apr 1929 | Arrives in NYC on liner New York, moves to Buffalo, NY, sponsored by Karl Ehrich |
| 1933 | Begins teaching at Art Institute of Buffalo until 1938 |
| 6 Oct 1934 | Becomes US citizen, petition 22594 |
| 22 Sep 1937 | Begins teaching at Memorial Art Gallery, Rochester |
| 1 May 1938 | Parents arrive in NYC on liner Europa for a 3-month visit |
| 20 May 1938 | Becomes supervisor of the Buffalo Unit of the Federal Art Project |
| 1 Sep 1939 | Begins teaching as Instructor at the University of Rochester |
| 9 Jan 1941 | Ruth Ehrich becomes US citizen, petition 33601 |
| 3 Oct 1941 | Buys home in Rochester, NY |
| 11 Nov 1942 | Lillian Fairchild Award, Memorial Art Gallery, Rochester |
| 18 Aug 1943 | Son Roger is born |
| 26 Aug 1944 | RAF firebombing, beginning of the destruction of Königsberg |
| 9 Apr 1945 | Capitulation of Königsberg to the Russians |
| 1950 | Pitt Petri Award of Merit, Albright Gallery, Buffalo |
| 2 Mar 1951 | Menno Alexander Reeb First Prize for "Broodess", Albright Gallery, Buffalo |
| 1957 | Appointed Assistant Professor at the University of Rochester |
| 1959 | Summer grant to study bronze casting at the Art Academy (Akademie der Bildenden Künste), München, under Heinrich Kirchner |
| 10 Aug 1960 | Death of heart attack in studio at Fauver Stadium, University of Rochester |
| 22 Apr 1992 | Death of Ruth Ehrich in Rochester, NY |
