1930 United States Federal Census

Validator (claude-sonnet-5-5, 2026-10-28): consistent, confidence 2/4, tier record.
The only woman named Mary on this page who is plausibly the claimed person is Mary Hejnarl (line 77). She is of Bohemian-Austrian birth, aged about 27, and immigrated about 1904. This does not contradict a 1903 birth in Moravia, but the census gives no exact date, no village and no maiden name. It is therefore consistent only, and the identification needs support from other records.
Matches: Sheet 4B, line 77: Mary, wife of James Hejnarl, is recorded as born in Bohemia-Austria, with both parents also born in Bohemia-Austria; Her age appears to be about 27, which implies a birth around 1902–1903 and is close to the claimed 1903; Her year of immigration appears to be 1904, which fits a child born in Moravia in 1903 who emigrated as an infant; The household speaks Bohemian (mother tongue), which fits Moravian origin
Limits: The census gives no maiden name, so nothing here links this Mary to the surname Konecny; No birth date or village is given; the record says only 'Bohemia-Austria', so Svatý Štěpán/Bylnice cannot be confirmed; The age (27) is hard to read and could imply a birth in 1902–03. A birth on 16 Oct 1903 would make her 26 in April 1930, so the age may be off by one year; Identification as the claimed Mary rests on a Bohemian-born woman of about the right age, and the match needs a separate marriage or immigration record; Handwriting is faint, so the ages and immigration year are partly uncertain