MH
Mary Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Adams-County, Colorado
Our Model Tree links this Mary Hart across the 1930 and 1940 US Censuses in Adams-County, Colorado (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Adams-County, Colorado |
| Surname | Hart |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Adams |
| 1935 Residence (County) | Adams |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| Eleanor Hart | Daughter | — | 13 | ~1927 |
| Flora Hart | Daughter | — | 8 | ~1932 |
| Mary Hart | Daughter | — | 11 | ~1929 |
| Marjorie Hart | Daughter | — | 15 | ~1925 |
| Lee Hart | Head | — | 42 | ~1898 |
| Lucas Hart | Son | — | 17 | ~1923 |
| Lee Hart | Son | — | 10 | ~1930 |
| Le Hart | Son | — | 9 | ~1931 |
| Flora Hart | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Denver, Colorado
Daughter, age 1
Denver, Colorado · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Colorado |
| Occupation | none |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Adams-County, Colorado
Daughter, age 11
Adams-County, Colorado · implied b. ~1929 — 9 household members
| Surname | Hart |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Adams |
| 1935 Residence (County) | Adams |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Hart across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hart
Daughter · 1940 · age 11 · b. ~1929 · Colorado
★ You are viewing this record
Sibling
Lee Hart
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucas Hart
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Flora Hart
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Le Hart
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Hart
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Hart
Sibling · 1940 · age 13
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 — Adams-County, Colorado
Open full size
1940 US Federal Census — Adams-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00454-00180)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Glenn Fleming | 31 | Head | Mechanic | Kansas |
| 42 | Bert Choate | 53 | Head | Engineer | Virginia |
| 43 | Margie Choate | 53 | Wife | — | N. Carolina |
| 44 | Earl Choate | 20 | Son | — | Montana |
| 45 | Ruth Choate | 17 | Daughter | — | Montana |
| 46 | Virgil Wright-Vouch | 28 | Head | Wrecking | Illinois |
| 47 | Fern Wright-Vouch | 26 | Wife | — | Nebraska |
| 48 | Wanda Jean Wright-Vouch | 5 | Daughter | — | Colorado |
| 49 | Barbara Ann Wright-Vouch | 1 | Daughter | — | Colorado |
| 50 | John H. Haldeman | 35 | Head | Superintendent | Missouri |
| 51 | Myrtle Haldeman | 33 | Wife | — | Colorado |
| 52 | Joy May Haldeman | 12 | Daughter | — | Colorado |
| 53 | Ralph Gentry | 26 | Head | State Fish H. | Colorado |
| 54 | Rose Gentry | 24 | Wife | — | Colorado |
| 55 | John Perlinger | 60 | Head | — | Hungary |
| 56 | Grace Perlinger | 60 | Wife | — | Hungary |
| 57 | Joseph Reither | 62 | Head | Farmer | Hungary |
| 58 | Theresa Reither | 52 | Wife | — | Hungary |
| 59 | Lena Reither | 20 | Daughter | — | Minnesota |
| 60 | Edward Reither | 17 | Son | Laborer | Minnesota |
| 61 | Ole Johnson | 72 | Head | Farmer | Denmark |
| 62 | Dominick Palizzi | 47 | Head | Farmer | Italy |
| 63 | Rose Palizzi | 46 | Wife | Laborer | Italy |
| 64 | Mary Palizzi | 26 | Daughter | Laborer | Italy |
| 65 | Melva Palizzi | 21 | Daughter | Laborer | Italy |
| 66 | Ida Palizzi | 19 | Daughter | — | Italy |
| 67 | Carl Palizzi | 18 | Son | Laborer | Italy |
| 68 | Johnny Palizzi | 8 | Son | — | Colorado |
| 69 | Tony Palizzi | 7 | Son | — | Colorado |
| 70 | Jean Palizzi | 5 | Daughter | — | Colorado |
| 71 | Frankie Palizzi | 2 | Son | — | Colorado |
| 72 | Lee Hart | 42 | Head | W.P.A. | New Mexico |
| 73 | Flora Hart | 37 | Wife | — | Colorado |
| 74 | Lucas Hart | 17 | Son | Laborer | Colorado |
| 75 | Marjorie Hart | 15 | Daughter | — | Colorado |
| 76 | Eleanor Hart | 13 | Daughter | — | Colorado |
| 77 | Mary Jane Hart THIS PERSON | 11 | Daughter | — | Colorado |
| 78 | Lee Jr. Hart | 10 | Son | — | Colorado |
| 79 | Le Roy Hart | 9 | Son | — | Colorado |
| 80 | Flora Belle Hart | 8 | Daughter | — | Colorado |
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)