1920 United States Federal Census

Validator (claude-sonnet-5-5, 2026-10-28): consistent, confidence 3/4, tier record.
On sheet 17B, line 85 shows Vaclav Tauber, head, age 43, born in Bohemia, a carpenter on the railroad, with wife Francis. The name Vaclav matches Václav, and the Tauber surname is mostly legible. The record supports the name form and is consistent with the 1876 birth year, but it does not confirm identity beyond that.
Matches: Household 348 (line 85) lists "Vaclav Tauber" (surname looks like "Taub..."/"Tauber") as head, age 43, born Bohemia, carpenter; Wife Francis, age 43, born Bohemia; Sons Jerrie (20) and James (18), born Bohemia; also a roomer, Josephine Strojsch; Place matches the citation: Chicago Ward 29, Cook County, Illinois, sheet 17B; Age 43 gives a birth year of about 1876–77, which fits the claimed 1876; Immigration year looks like 1907 and the mother tongue is Bohemian, which fits a Czech immigrant
Limits: A census gives an age rather than a birth date, so it cannot confirm 1876 exactly or the death date 1956; The claim covers only the name, and the census gives a given name and surname form, not the Czech spelling Václav; The surname on the image is slightly cramped and hard to read, so the spelling is not fully certain; Nothing on the page links this household to the specific Václav Tauber in the database beyond the name, age and origin; The enumeration district reads 1708 on the image but 1758 in the citation, a minor discrepancy