MN
Mary Novak — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Colorado
Our Model Tree links this Mary Novak across the 1930 and 1940 US Censuses in Lake-County, Colorado (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 8-person household.
Age 52
b. ~1888
Female
Spouse
Born: Yugoslavia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Colorado |
| Surname | Novak |
| Given Name | Mary U. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Yugoslavia |
| 1935 Residence (City) | Leadville |
| 1935 Residence (County) | Lake |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same House |
| Birth Country | Yugoslavia |
| Birthplace (normalized) | yugoslavia |
| Township / Ward | Leadville |
| Est. Birth Year | ~1888 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Joe Novak | Son | — | 20 | ~1920 |
| Anton Novak | Head | — | 61 | ~1879 |
| Henry Novak | Son | — | 28 | ~1912 |
| Mary Novak | Spouse | — | 52 | ~1888 |
| Tony Novak | Son | — | 30 | ~1910 |
| Julia Novak | Daughter | — | 22 | ~1918 |
| Frank Novak | Son | — | 16 | ~1924 |
| Angela Novak | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Lake, Colorado
Other, age 40
Lake, Colorado · implied b. ~1890 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Novak |
| Given Name | Mary |
| Relationship to Head | Head-H |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Yugoslavia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 12 |
| Father's Birthplace | Yugoslavia |
| Mother's Birthplace | Yugoslavia |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 300 |
| Birth Country | Yugoslavia |
| Birthplace (normalized) | yugoslavia |
1940
Lake-County, Colorado
Spouse, age 52
Lake-County, Colorado · implied b. ~1888 — 8 household members
| Surname | Novak |
| Given Name | Mary U. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Yugoslavia |
| 1935 Residence (City) | Leadville |
| 1935 Residence (County) | Lake |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same House |
| Birth Country | Yugoslavia |
| Birthplace (normalized) | yugoslavia |
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
Spouse · 1940 · age 52 · b. ~1888 · Colorado
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Lake-County, Colorado
Open full size
1940 US Federal Census — Lake-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00466-00414)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank J. Brodach | 27 | Head | Laborer | Colorado |
| 2 | Johanna J. Brodach | 29 | Wife | — | Colorado |
| 3 | Joan M. Brodach | 4 | Daughter | — | Colorado |
| 4 | Ann M. Brodach | 3 | Daughter | — | Colorado |
| 5 | John Vidmar | 75 | Head | — | Yugoslavia |
| 6 | Mary M. Vidmar | 60 | Wife | — | Yugoslavia |
| 7 | Agnes A. Treverson | 42 | Head | Press Woman | Colorado |
| 8 | Chauncy Krider | 49 | Head | Painter | Indiana |
| 9 | John Sr. Batich | 56 | Head | Truck Driver | Yugoslavia |
| 10 | John Jr. Batich | 27 | Son | Miner | Colorado |
| 11 | Tillie Treber | 72 | Head | — | Germany |
| 12 | John Sheber | 57 | Head | Foreman | Yugoslavia |
| 13 | Mary Sheber | 53 | Wife | — | Yugoslavia |
| 14 | Frank C. Trujillo | 35 | Head | Laborer | New Mexico |
| 15 | Eloise Trujillo | 32 | Wife | — | New Mexico |
| 16 | Adelia Trujillo | 12 | Daughter | — | Colorado |
| 17 | Joe Trujillo | 11 | Daughter | — | Colorado |
| 18 | Filiberto Trujillo | 9 | Son | — | New Mexico |
| 19 | Eli Trujillo | 7 | Son | — | New Mexico |
| 20 | Priscilla Trujillo | 1 | Daughter | — | Colorado |
| 21 | Napoleon Bionaz | 57 | Head | — | Italy |
| 22 | Ielerina Bionaz | 57 | Wife | — | Italy |
| 23 | Steve Oberstar | 39 | Head | Miner | Colorado |
| 24 | Anton F. Novak | 61 | Head | Scavenger | Yugoslavia |
| 25 | Mary U. Novak THIS PERSON | 52 | Wife | — | Yugoslavia |
| 26 | Tony J. Novak | 30 | Son | Miner | Colorado |
| 27 | Henry G. Novak | 28 | Son | Laborer | Colorado |
| 28 | Julia R. Novak | 22 | Daughter | Maid | Colorado |
| 29 | Joe Novak | 20 | Son | Scavenger | Colorado |
| 30 | Angela M. Novak | 18 | Daughter | — | Colorado |
| 31 | Frank Novak | 16 | Son | New Worker | Colorado |
| 32 | George J. Favoren | 39 | Head | Laborer | Colorado |
| 33 | Francis M. Favoren | 32 | Wife | — | Colorado |
| 34 | Robert G. Favoren | 6 | Son | — | Colorado |
| 35 | Caroll A. Favoren | 3 | Daughter | — | Colorado |
| 36 | John Potpockin | 58 | Head | Mucker | Yugoslavia |
| 37 | Johanna Potpockin | 43 | Wife | — | Yugoslavia |
| 38 | Ludwig Potpockin | 22 | Son | Laborer | Colorado |
| 39 | Angela Potpockin | 22 | Daughter | — | Colorado |
| 40 | Frank Potpockin | 19 | Son | Laborer | Colorado |
Related Census Records
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)