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Mary Haines — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this Mary Haines across the 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 4-person household.
Age 38
b. ~1902
Female
Spouse
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Haines |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1902 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Marlyn Haines | Daughter | — | 18 | ~1922 |
| Mary Haines | Spouse | — | 38 | ~1902 |
| Robert Haines | Son | — | 16 | ~1924 |
| Robert Haines | Head | — | 41 | ~1899 |
Census Appearances
1930
Mercer, New …
Spouse, age 27
Mercer, New Jersey · implied b. ~1903 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Haines |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 19 |
| Father's Birthplace | New York |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Spouse, age 38
Mercer-County, New Jersey · implied b. ~1902 — 4 household members
| Surname | Haines |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Class of Worker | 0 |
| Highest Grade | H 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 Mary Haines across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Haines
Spouse · 1940 · age 38 · b. ~1902 · New Jersey
★ You are viewing this record
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-t0627-02437-00259)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sally Ann Shick | 10 | Grand Daughter | — | New Jersey |
| 2 | Mary Jane Shick | 4 | Grand Daughter | — | New Jersey |
| 3 | Walter C Stevenson | 75 | Head | — | New Jersey |
| 4 | Ida V Stevenson | 70 | Wife | — | New Jersey |
| 5 | Laura Stevenson | 50 | Daughter | Clerk | New Jersey |
| 6 | Stephan Diekneit | 50 | Head | Carpenter | New Jersey |
| 7 | Stephan Jr Diekneit | 25 | Son | Salesman | New Jersey |
| 8 | Richard Diekneit | 19 | Son | New Worker | New Jersey |
| 9 | Edward O'Hara | 67 | Head | Engineer | New Jersey |
| 10 | Mary O'Hara | 62 | Wife | — | Pennsylvania |
| 11 | Edward O'Hara | 32 | Nephew | Foreman Grade #3 | New Jersey |
| 12 | Josephine O'Hara | 24 | Niece | Stenographer | New Jersey |
| 13 | Elizabeth Smith | 76 | Head | — | Pennsylvania |
| 14 | Jane Williams | 75 | Head | — | England |
| 15 | Lily Williams | 58 | Daughter | Teacher | New Jersey |
| 16 | Benjamin Vhaas | 51 | Head | Steam Fitter | Pennsylvania |
| 17 | Robert Vhaas | 25 | Son | File Clerk | Pennsylvania |
| 18 | John H Vhaas | 19 | Son | — | Pennsylvania |
| 19 | Mary E Vhaas | 17 | Daughter | Salesgirl | Pennsylvania |
| 20 | Chas Vhaas | 13 | Son | — | New Jersey |
| 21 | Adelia R Hafer | 82 | Head | — | New Jersey |
| 22 | Mable J Hafer | 43 | Daughter | Receptionist | New Jersey |
| 23 | James B Richardson | 62 | Head | Machinist | New Jersey |
| 24 | Caroline Richardson | 57 | Wife | — | New Jersey |
| 25 | Maudville Hunt | 57 | Head | Teller | New Jersey |
| 26 | Belva Hunt | 51 | Wife | — | New Jersey |
| 27 | Harry Drake | 51 | Head | Helper On Truck | New Jersey |
| 28 | Bessie Drake | 51 | Wife | — | New Jersey |
| 29 | Jane Erwin | 35 | Head | Teacher | New Jersey |
| 30 | Jane F. M. Erwin | 80 | Mother | — | New Jersey |
| 31 | Helen V. Q. Pike | 39 | Head | Teacher | New Jersey |
| 32 | Wilford Hobson | 45 | Head | — | New Jersey |
| 33 | Helen Hobson | 39 | Wife | — | New Jersey |
| 34 | Arnold Hobson | 18 | Son | — | New Jersey |
| 35 | Kenneth Hobson | 14 | Son | — | New Jersey |
| 36 | Audrey Hobson | 5 | Daughter | — | New Jersey |
| 37 | Robert Haines | 41 | Head | Fireman | New Jersey |
| 38 | Mary Haines THIS PERSON | 38 | Wife | — | New Jersey |
| 39 | Marlyn Haines | 18 | Daughter | — | New Jersey |
| 40 | Robert Jr Haines | 16 | Son | — | New Jersey |
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)