| Personal data | |
|---|---|
| Surname | Tsvi |
| Name | Iosif |
| Patronym | Ruvinovich |
| Birth year | 1890 |
| Birth month | 8 |
| Birth day | 22 |
| Birth place | Dvinsk |
| Sex | M |
Tsvi Iosif Ruvinovich (22.08.1890, Dvinsk, Vitebsk Governorate — ?) — teacher, physician. Born into the family of a townsman. In 1909 he completed the Real Gymnasium in Dvinsk. In June 1917 he completed the medical faculty of the University of Yuriev, receiving the right to medical practice. According to the records of the Teachers' Census Commission of the Ministry of Education, from autumn 1927 he taught as a probationary teacher at the Municipal Jewish Gymnasium in Daugavpils, teaching anatomy, physiology, and hygiene.
S. Kovalchuk