JC
John Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, New Jersey
Our Model Tree links this John Clark across the 1920, 1930 and 1940 US Censuses in Middlesex-County, New Jersey (XGBoost, ~Confirmed), with identified parents Martin & Mary — first a son (b.~1915), then head of a 8-person household.
Age 25
b. ~1915
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, New Jersey |
| Surname | Clark |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | New Brunswick |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | New Brunswick |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Winifred Clark | Daughter | — | 11 | ~1929 |
| Margaret Clark | Daughter | — | 18 | ~1922 |
| Martin Clark | Head | — | 53 | ~1887 |
| Thomas Clark | Son | — | 19 | ~1921 |
| John Clark | Son | — | 25 | ~1915 |
| William Clark | Son | — | 15 | ~1925 |
| Joseph Clark | Son | — | 7 | ~1933 |
| Mary Clark | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Middlesex, New …
Son, age 5
Middlesex, New Jersey · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Scotland |
| Mother's Birthplace | New Jersey |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Middlesex, New …
Son, age 15
Middlesex, New Jersey · implied b. ~1915 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Scotland |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Middlesex-County, New …
Son, age 25
Middlesex-County, New Jersey · implied b. ~1915 — 8 household members
| Surname | Clark |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | New Brunswick |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 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 John Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Martin Clark (~0.92 confidence) and mother Mary Clark (~0.92 confidence) and mother Mary Clark (~0.92 confidence) and mother Mary Clark (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Martin Clark
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Mary Clark
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Mary Clark
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Mary Clark
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Clark
Son · 1940 · age 25 · b. ~1915 · New Jersey
★ You are viewing this record
Sibling
Thomas Clark
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Winifred Clark
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Clark
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Clark
Sibling · 1940 · age 18
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 — Middlesex-County, New Jersey
Open full size
1940 US Federal Census — Middlesex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02360-00401)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Salvatore Damico | 25 | Head | Laborer | New Jersey |
| 2 | Margaret Damico | 23 | Wife | — | New Jersey |
| 3 | Angelina Damico | 57 | Mother | — | Italy |
| 4 | Jenny Damico | 33 | Sister | — | Italy |
| 5 | John Horvath | 48 | Head | Laborer | Hungary |
| 6 | Julia Horvath | 42 | Wife | — | Hungary |
| 7 | Joseph Horvath | 22 | Son | Laborer | Michigan |
| 8 | Anna Horvath | 19 | Daughter | Clerk | New Jersey |
| 9 | Alex The Turk | 32 | Head | Mechanic | New Jersey |
| 10 | Irene The Turk | 24 | Wife | — | Hungary |
| 11 | Arlene The Turk | 3 | Daughter | — | New Jersey |
| 12 | Theodore The Turk | 0 | Son | — | New Jersey |
| 13 | Frank Daboc | 52 | Lodger | Laborer | Hungary |
| 14 | Lucy Williams | 46 | Head | — | Hungary |
| 15 | Steve Williams | 31 | Son | Salesman | New Jersey |
| 16 | Elizabeth Williams | 29 | Daughter-in-law | — | New Jersey |
| 17 | John Williams | 7 | Grandson | — | New Jersey |
| 18 | Elizabeth Williams | 5 | Granddaughter | — | New Jersey |
| 19 | Marion Williams | 4 | Granddaughter | — | New Jersey |
| 20 | Martin Clark | 53 | Head | Foreman | Scotland |
| 21 | Mary Clark | 44 | Wife | — | New Jersey |
| 22 | John Clark THIS PERSON | 25 | Son | — | New Jersey |
| 23 | Thomas Clark | 19 | Son | Clerk | New Jersey |
| 24 | Margaret Clark | 18 | Daughter | — | New Jersey |
| 25 | William Clark | 15 | Son | — | New Jersey |
| 26 | Winifred Clark | 11 | Daughter | — | New Jersey |
| 27 | Joseph Clark | 7 | Son | — | New Jersey |
| 28 | M. J. Dinces | 47 | Head | Salesman | Austria |
| 29 | Nellie Dinces | 44 | Wife | — | New Jersey |
| 30 | Harold Dinces | 20 | Son | Auto Greaser | New Jersey |
| 31 | Elythe Dinces | 13 | Daughter | — | New Jersey |
| 32 | Harry Weinick | 48 | Head | Salesman | Russia |
| 33 | Rebecca Weinick | 47 | Wife | — | Russia |
| 34 | Samuel Kenonsh | 29 | Head | Salesman | New Jersey |
| 35 | Pauline Kenonsh | 26 | Wife | — | New York |
| 36 | Martin Kenonsh | 7 | Son | — | New Jersey |
| 37 | Shirley Kenonsh | 3 | Daughter | — | New Jersey |
| 38 | Thad Witkowski | 42 | Head | Drier | New Jersey |
| 39 | Viola Witkowski | 34 | Wife | Operator | New Jersey |
| 40 | Betty Witkowski | 5 | Daughter | — | New Jersey |
Pedigree Summary
John + 5 siblings
Gen 1 · 4 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)