- Listed as David Zilber, son of Berel, age 36 in 1874 Russian Family Census with wife and children (Kaunas Regional Archives; JewishGen.org).
- Said to be a Litvak rabbi. An undated photograph taken of him is stamped "Kovenskoi" (Kovno, Kaunas town or gubernia).
On 15 December 1891, listed as a Rabbi Elector for Zidikai, Kaunas Guberniya, Lithuania (Kaunas Regional Archives; JewishGen.org).