1920 United States Federal Census

Validator (claude-sonnet-5-5, 2026-10-28): supports, confidence 3/4, tier record.
The 1920 Manitowoc census image shows Mary Konecny, daughter, age 16, born Bohemia, in the Konecny household. Her immigration-year entry appears to read 1904, matching the claimed arrival date at year level. Her age fits a 1903 birth, though the record cannot confirm a full arrival date or place.
Matches: Household at lines 53-55 is headed by Konecny (age 54, born Bohemia), with son Joseph (19) and daughter Mary (16), both born in Bohemia; Mary's row (line 55) shows a year of immigration in column 13 that reads 1904, with 'al' (alien) in column 14; Age 16 on 12 Jan 1920 gives a birth year of about 1903/04, consistent with Mary Konecny b. 1903; Bohemian birthplace and Bohemian mother tongue fit a Czech immigrant family
Limits: The census gives only the year of immigration, not a month, day, port or ship; The handwriting in the immigration column is slightly cramped, so the digits 1904 are read with moderate rather than full certainty; The record does not state her exact birth date or death, so the 1903–1989 life span cannot be checked; Identification as the same Mary rests on name, age and birthplace alone