JH
John Hardy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Monmouth-County, New Jersey
Our Model Tree links this John Hardy across the 1920, 1930 and 1940 US Censuses in Monmouth-County, New Jersey (XGBoost, ~Confirmed), with identified parents Edward & Harriet — first a son (b.~1915), then head of a 7-person household.
Age 25
b. ~1915
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Monmouth-County, New Jersey |
| Surname | Hardy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Marlboro |
| 1935 Residence (County) | Monmouth |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 72 |
| Income (1939) | 888 |
| Highest Grade | 8 |
| 1935 Residence | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Farmer |
| Township / Ward | Marlboro T |
| Est. Birth Year | ~1915 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Hardy | Daughter | — | 27 | ~1913 |
| Edward Hardy | Head | — | 57 | ~1883 |
| Thomas Russell | Other | — | 45 | ~1895 |
| John Hardy | Son | — | 25 | ~1915 |
| Alfred Hardy | Son | — | 13 | ~1927 |
| David Hardy | Son | — | 21 | ~1919 |
| Harriet Hardy | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Monmouth, New …
Son, age 4
Monmouth, New Jersey · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hardy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Monmouth, New …
Son, age 15
Monmouth, New Jersey · implied b. ~1915 — 26 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hardy |
| Given Name | John J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| 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
Monmouth-County, New …
Son, age 25
Monmouth-County, New Jersey · implied b. ~1915 — 7 household members
| Surname | Hardy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Marlboro |
| 1935 Residence (County) | Monmouth |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 72 |
| Income (1939) | 888 |
| Highest Grade | 8 |
| 1935 Residence | New Jersey |
| 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 John Hardy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Hardy (~0.92 confidence) and mother Harriet Hardy (~0.92 confidence) and father Edward Hardy (~0.92 confidence) and mother Catherine Collins (~0.92 confidence) and mother Harriett Hardy (~0.92 confidence) and father William Matthews (~0.92 confidence) and mother Mary Matthews (~0.60 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.87
Father
Edward Hardy
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Harriet Hardy
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Edward Hardy
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Catherine Collins
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Harriett Hardy
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
William Matthews
b. ~1901
Source father
● Household
· direct · ~0.92
Mother
Mary Matthews
b. ~1904
Source mother
● Household
· direct · ~0.6
This person
Anchor record
John Hardy
Son · 1940 · age 25 · b. ~1915 · New Jersey
★ You are viewing this record
Sibling
David Hardy
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Hardy
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Hardy
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 — Monmouth-County, New Jersey
Open full size
1940 US Federal Census — Monmouth-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02367-00651)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mabel Preston | 35 | Wife | — | New Jersey |
| 2 | Howard Preston | 70 | Father | Road Foreman | New Jersey |
| 3 | Howard Preston | 11 | Son | — | New Jersey |
| 4 | Almira Schanck | 57 | Head | — | New Jersey |
| 5 | Edward Hardy | 57 | Head | Farmer | New Jersey |
| 6 | Harriet Hardy | 57 | Wife | — | New Jersey |
| 7 | Elizabeth Hardy | 27 | Daughter | — | New Jersey |
| 8 | John Hardy THIS PERSON | 25 | Son | Farmer | New Jersey |
| 9 | David Hardy | 21 | Son | Farmer | New Jersey |
| 10 | Alfred Hardy | 13 | Son | — | New Jersey |
| 11 | Thomas Russell | 45 | Boarder | — | New Jersey |
| 12 | John E. Tilton | 46 | Head | Policeman | New Jersey |
| 13 | Lillian Tilton | 43 | Wife | — | New Jersey |
| 14 | Joseph Tilton | 19 | Son | — | New Jersey |
| 15 | Ray Tilton | 15 | Son | — | New Jersey |
| 16 | Marjorie Dobbins | 54 | Wife | — | New York |
| 17 | Robert Garrard | 55 | Head | Retired Farmer | New Jersey |
| 18 | Wallace Dobbins | 21 | Son | Laborer | New Jersey |
| 19 | Robert Macgary | 56 | Brother-in-law | Mechanic | England |
| 20 | James Van Keuren | 28 | Head | Minister | New York |
| 21 | Helen E. Van Keuren | 41 | Wife | — | New Jersey |
| 22 | Mary H. Schanck | 79 | Boarder | — | New Jersey |
| 23 | Mary Quackenbush | 56 | Wife | — | New Jersey |
| 24 | Bert Quackenbush | 56 | Head | Mechanic | New Jersey |
| 25 | W. V. Broach | 88 | Boarder | — | New York |
| 26 | Charles Stow | 65 | Head | Farmer | Pennsylvania |
| 27 | Mary Stow | 63 | Wife | Retired | New Jersey |
| 28 | Thomas Maher | 60 | Head | Farmer | New Jersey |
| 29 | Marietta Maher | 57 | Wife | — | New Jersey |
| 30 | Grace Maher | 20 | Daughter | Attendant | New Jersey |
| 31 | Mary Maher | 18 | Daughter | — | New Jersey |
| 32 | Ruth Maher | 17 | Daughter | — | New Jersey |
| 33 | Helen Cook | 45 | Mother | — | New Jersey |
| 34 | Lester Cook | 23 | Son | Bartender | New Jersey |
| 35 | Dorothy Cook | 22 | Wife | — | New Jersey |
| 36 | John Eisenberg | 35 | Head | Storekeeper | New York |
| 37 | Dorothy Eisenberg | 28 | Wife | — | New Jersey |
| 38 | Joseph Eisenberg | 69 | Father | — | Russia |
| 39 | Sarah Eisenberg | 61 | Mother | — | Russia |
| 40 | Beatrice Eisenberg | 5 | Daughter | — | New Jersey |
Related Census Records
Pedigree Summary
John + 3 siblings
Gen 1 · 7 parents
~0.87
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)