MN
Mary Novak — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Mary Novak across the 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 9-person household.
Age 17
b. ~1923
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | Novak |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis City |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Occupation | new worker |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | New Worker |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1923 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Novak | Daughter | — | 17 | ~1923 |
| Walter Novak | Son | — | 19 | ~1921 |
| John Novak | Head | — | 57 | ~1883 |
| Anthony Novak | Son | — | 33 | ~1907 |
| John Novak | Son | — | 21 | ~1919 |
| Rose Novak | Spouse | — | 57 | ~1883 |
| Joseph Novak | Son | — | 26 | ~1914 |
| Frank Novak | Son | — | 24 | ~1916 |
| Adelin Novak | Daughter | — | 14 | ~1926 |
Census Appearances
1930
St Louis, …
Daughter, age 7
St Louis, Missouri · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Daughter, age 17
St.-Louis-City-County, Missouri · implied b. ~1923 — 9 household members
| Surname | Novak |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis City |
| 1935 Residence (County) | St. Louis City |
| Occupation | new worker |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Novak across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Novak
Daughter · 1940 · age 17 · b. ~1923 · Missouri
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Sibling
Joseph Novak
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Novak
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Novak
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anthony Novak
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Novak
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Adelin Novak
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Louis-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02184-00141)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph L. Swiderski | 31 | Head | Proprietor | Missouri |
| 2 | Hedwig Swiderski | 27 | Wife | Waitress | Missouri |
| 3 | Florence Swiderski | 8 | Daughter | — | Missouri |
| 4 | Joseph Jr. Swiderski | 5 | Son | — | Missouri |
| 5 | Mary Ann Swiderski | 1 | Daughter | — | Missouri |
| 6 | William Browning | 72 | Head | — | Ohio |
| 7 | Minnie Browning | 71 | Wife | — | Missouri |
| 8 | John Novak | 57 | Head | Chipper | Austria |
| 9 | Rose Novak | 57 | Wife | — | Austria |
| 10 | Anthony Novak | 33 | Son | — | Missouri |
| 11 | Joseph A. Novak | 26 | Son | Janitor | Missouri |
| 12 | Frank J. Novak | 24 | Son | Crane Operator | Missouri |
| 13 | John H. Novak | 21 | Son | Examiner | Missouri |
| 14 | Walter J. Novak | 19 | Son | Assembler | Missouri |
| 15 | Mary A. Novak THIS PERSON | 17 | Daughter | New Worker | Missouri |
| 16 | Adelin Novak | 14 | Daughter | — | Missouri |
| 17 | Joseph Moore | 51 | Head | Laborer | Illinois |
| 18 | Edith Moore | 44 | Wife | — | Mississippi |
| 19 | Marshall Walter Moore | 27 | Step-son | Moulder | Mississippi |
| 20 | Frank Allen | 29 | Head | Loader | Arkansas |
| 21 | Carrie Allen | 26 | Wife | — | Arkansas |
| 22 | Mary Frances Allen | 5 | Daughter | — | Arkansas |
| 23 | Louis Owens | 55 | Head | — | Arkansas |
| 24 | Virginia Owens | 60 | Wife | — | Arkansas |
| 25 | Elmer Fred Owens | 25 | Step-son | Shaker | Arkansas |
| 26 | Luther C. Collier | 28 | Head | Laborer | Arkansas |
| 27 | Coretta Collier | 26 | Wife | — | Arkansas |
| 28 | Gladys Mae Collier | 11 | Daughter | — | Arkansas |
| 29 | Luther C. Jr. Collier | 8 | Son | — | Arkansas |
| 30 | William Coley | 39 | Head | Janitor | Mississippi |
| 31 | Esther Coley | 20 | Wife | — | Arkansas |
| 32 | Herman Taylor | 12 | Step-son | — | Arkansas |
| 33 | George Smith | 53 | Head | Wrecker | Mississippi |
| 34 | Willie Smith | 50 | Wife | — | Mississippi |
| 35 | Carrie Cross | 55 | Head | — | Mississippi |
| 36 | Sarah Cross | 28 | Daughter | Mender | Mississippi |
| 37 | Carrie Mae Cross | 16 | Granddaughter | — | Missouri |
| 38 | Eugene Cross | 15 | Grandson | — | Missouri |
| 39 | Ralph Cross | 14 | Grandson | — | Missouri |
| 40 | John Ross | 52 | Head | Freight Handler | Mississippi |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)