MH
Margaret Hart — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this Margaret Hart across the 1920, 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed), with identified parents Clarence & Clarence — first a daughter (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Washington Crossing |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | Waitress |
| Industry | Tea Room |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Waitress |
| Township / Ward | Washington Crossing |
| Est. Birth Year | ~1916 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Hart | Daughter | — | 24 | ~1916 |
| Clarence Hart | Head | — | 47 | ~1893 |
| Luella Hart | Spouse | — | 45 | ~1895 |
| Clarence Hart | Son | — | 22 | ~1918 |
Census Appearances
1920
Mercer, New …
Other, age 3
Mercer, New Jersey · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Mercer, New …
Daughter, age 14
Mercer, New Jersey · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Daughter, age 24
Mercer-County, New Jersey · implied b. ~1916 — 4 household members
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Washington Crossing |
| 1935 Residence (County) | Mercer |
| Occupation | Waitress |
| Industry | Tea Room |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Margaret Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clarence Hart (~0.92 confidence) and father Clarence Hart (~0.92 confidence) and mother Louella Hart (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clarence Hart
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Clarence Hart
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Louella Hart
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Hart
Daughter · 1940 · age 24 · b. ~1916 · New Jersey
★ You are viewing this record
Sibling
Clarence Hart
Sibling · 1940 · age 22
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 — Mercer-County, New Jersey
Open full size
1940 US Federal Census — Mercer-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02357-00248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Barnhart | 27 | Head | Farm Hand | Pennsylvania |
| 42 | Rosalie Barnhart | 27 | Wife | — | Pennsylvania |
| 43 | Rose Marie Barnhart | 9 | Daughter | — | New Jersey |
| 44 | Dorothy Barnhart | 8 | Daughter | — | New Jersey |
| 45 | Pearl Barnhart | 7 | Daughter | — | New Jersey |
| 46 | John Barnhart | 4 | Son | — | New Jersey |
| 47 | Michael Laska | 57 | Uncle | — | Czechoslovakia |
| 48 | Frank T. Mars | 44 | Head | Iron Moulder | New Jersey |
| 49 | Frank Jr. Mars | 20 | Son | Laborer | New Jersey |
| 50 | Joseph Wood | 68 | Father-in-law | Painter | New Jersey |
| 51 | Vincent Rockel | 38 | Head | Tile Cutter | New Jersey |
| 52 | Anna Rockel | 37 | Wife | — | New Jersey |
| 53 | William Rockel | 8 | Son | — | New Jersey |
| 54 | Vincent F. Rockel | 7 | Son | — | New Jersey |
| 55 | Charles J. Bright | 38 | Head | Helper | New Jersey |
| 56 | Myrtle Bright | 37 | Wife | — | Pennsylvania |
| 57 | Charles Bright | 13 | Son | — | New Jersey |
| 58 | Elizabeth Jane Bright | 11 | Daughter | — | New Jersey |
| 59 | Harry W. Bright | 9 | Son | — | New Jersey |
| 60 | Howard H. Bright | 4 | Son | — | New Jersey |
| 61 | Norman Mcewan | 33 | Head | Cost Clerk | New Jersey |
| 62 | Winifred Mcewan | 32 | Wife | — | New Jersey |
| 63 | John A. Hallinger | 42 | Head | Truck Driver | New Jersey |
| 64 | Viola Hallinger | 31 | Wife | — | New Jersey |
| 65 | John A. Jr. Hallinger | 9 | Son | — | New Jersey |
| 66 | Arthur Andrew Hallinger | 6 | Son | — | New Jersey |
| 67 | Louise Irene Hallinger | 5 | Daughter | — | New Jersey |
| 68 | James Hamilton Hallinger | 3 | Son | — | New Jersey |
| 69 | Paul Richard Hallinger | 1 | Son | — | New Jersey |
| 70 | R. William Moore | 40 | Head | Laborer | Dist. Columbia |
| 71 | Irene Moore | 37 | Wife | — | Dist. Columbia |
| 72 | Clarence Hart | 47 | Head | Kilnman | New Jersey |
| 73 | Luella Hart | 45 | Wife | — | New Jersey |
| 74 | Margaret Hart THIS PERSON | 24 | Daughter | Waitress | New Jersey |
| 75 | Clarence W. Hart | 22 | Son | Cooper | New Jersey |
| 76 | Hugo C. Meiners | 37 | Head | Moulder | Germany |
| 77 | Olga Meiners | 33 | Wife | — | Germany |
| 78 | Hugo Kenneth Meiners | 7 | Son | — | New Jersey |
| 79 | Elmer E. Slack | 27 | Head | — | New Jersey |
| 80 | Charles Slack | 52 | Son | Sales Manager | New Jersey |
Pedigree Summary
Margaret + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)