JT
John Tierney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this John Tierney across the 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed), with identified parents Matthew & Matthew — first a son (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Tierney |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Rahway |
| 1935 Residence (County) | Union |
| Additional Details | |
| Occupation | Plumber |
| Industry | Plumbing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Plumber |
| Township / Ward | Rahway |
| Est. Birth Year | ~1907 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Matthew Tierney | Head | — | 67 | ~1873 |
| John Tierney | Son | — | 33 | ~1907 |
| Helen Tierney | Daughter | — | 26 | ~1914 |
Census Appearances
1920
Union, New …
Son, age 13
Union, New Jersey · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tierney |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Union, New …
Son, age 23
Union, New Jersey · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tierney |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Steam Fitting |
| Industry | Chemical |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Union-County, New …
Son, age 33
Union-County, New Jersey · implied b. ~1907 — 3 household members
| Surname | Tierney |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Rahway |
| 1935 Residence (County) | Union |
| Occupation | Plumber |
| Industry | Plumbing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| 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 John Tierney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Matthew Tierney (~0.92 confidence) and father Matthew Tierney (~0.92 confidence) and father Matthew Tierney (~0.92 confidence) and mother Annie Tierney (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Matthew Tierney
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Matthew Tierney
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Matthew Tierney
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Annie Tierney
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Tierney
Son · 1940 · age 33 · b. ~1907 · New Jersey
★ You are viewing this record
Sibling
Helen Tierney
Sibling · 1940 · age 26
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 — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02388-00328)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Barbara Miller | 3 | Daughter | — | New Jersey |
| 42 | Otto Miller | 35 | Head | Estimator | New York |
| 43 | Julia Miller | 36 | Wife | — | New York |
| 44 | William Miller | 6 | Son | — | New York |
| 45 | Carol Ann Miller | 2 | Daughter | — | New Jersey |
| 46 | Thomas Ab Robinson | 54 | Head | Assistant Chief Clerk | New York |
| 47 | Kathryne Robinson | 54 | Wife | — | New York |
| 48 | Eleanore Robinson | 26 | Daughter | Proof Reader | New Jersey |
| 49 | Thomas Jr. Robinson | 21 | Son | Runner | New Jersey |
| 50 | Mary Robinson | 19 | Daughter | Stenographer | New Jersey |
| 51 | John Robinson | 19 | Son | Shipping Clerk | New Jersey |
| 52 | Manzon Martin | 58 | Head | Banker | New Jersey |
| 53 | Bessie Martin | 57 | Wife | — | Pennsyl-vania |
| 54 | Manzon G. Martin | 23 | Son | Buyer | New York |
| 55 | Grace Robson | 33 | Maid | Maid | New Jersey |
| 56 | Max Tishlar | 32 | Head | Chemist | Massachu-setts |
| 57 | Elizabeth Tishlar | 29 | Wife | — | Massachu-setts |
| 58 | Peter Tishlar | 2 | Son | — | Massachu-setts |
| 59 | George Coleman | 42 | Head | Instructor | Pennsyl-vania |
| 60 | Beatrice Coleman | 42 | Wife | — | Washington DC |
| 61 | Joseph Coleman | 10 | Son | — | New Jersey |
| 62 | Harold Decker | 40 | Head | Chemist | Pennsyl-vania |
| 63 | Alice Decker | 43 | Wife | — | New Jersey |
| 64 | Harold Jr. Decker | 9 | Son | — | New Jersey |
| 65 | Dorothy Decker | 3 | Daughter | — | New Jersey |
| 66 | Levi Price | 46 | Head | Civil Engineer | New Jersey |
| 67 | Mary K. Price | 50 | Wife | — | New Jersey |
| 68 | Harry Hilton | 42 | Head | Freight Brakeman | New Jersey |
| 69 | Sadie Hilton | 42 | Wife | — | New York |
| 70 | Ruth Hilton | 19 | Daughter | Telephone Operator | New Jersey |
| 71 | Matthew Tierney | 67 | Head | Telegraph Operator | New Jersey |
| 72 | John M. Tierney THIS PERSON | 33 | Son | Plumber | New Jersey |
| 73 | Helen Tierney | 26 | Daughter | Trained Nurse | New Jersey |
| 74 | Hans Flues | 49 | Head | Department Manager | Germany |
| 75 | Mildred Flues | 48 | Wife | — | New Jersey |
| 76 | Shirley Flues | 13 | Daughter | — | New Jersey |
| 77 | Arthur Stevens | 56 | Head | Driver | New York |
| 78 | Mary Stevens | 55 | Wife | — | Irish Free State |
| 79 | Harry Albertson | 67 | Head | Check Clerk | New Jersey |
| 80 | Adah Albertson | 59 | Wife | — | New Jersey |
Pedigree Summary
John + 1 sibling
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)