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Thomas Donnelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Passaic-County, New Jersey
Our Model Tree links this Thomas Donnelly across the 1920, 1930 and 1940 US Censuses in Passaic-County, New Jersey (XGBoost, ~Confirmed), with identified parents Elizabeth — first a son (b.~1900), then head of a 2-person household.
Age 40
b. ~1900
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Passaic-County, New Jersey |
| Surname | Donnelly |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Paterson City |
| 1935 Residence (County) | Passaic |
| Additional Details | |
| Occupation | Clerk |
| Industry | Book Bind. Fact. W.P.A. |
| Class of Worker | GW |
| Hours Worked | 2 |
| Income (1939) | 500 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Clerk |
| Township / Ward | Paterson City |
| Est. Birth Year | ~1900 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Donnelly | Head | — | 76 | ~1864 |
| Thomas Donnelly | Son | — | 40 | ~1900 |
Census Appearances
1920
Passaic, New …
Son, age 19
Passaic, New Jersey · implied b. ~1901 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New Jersey |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Passaic, New …
Son, age 30
Passaic, New Jersey · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Age at First Marriage | 30 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New Jersey |
| Occupation | Painter |
| Industry | Bldg Const |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Passaic-County, New …
Son, age 40
Passaic-County, New Jersey · implied b. ~1900 — 2 household members
| Surname | Donnelly |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Paterson City |
| 1935 Residence (County) | Passaic |
| Occupation | Clerk |
| Industry | Book Bind. Fact. W.P.A. |
| Class of Worker | GW |
| Hours Worked | 2 |
| Income (1939) | 500 |
| Highest Grade | No 8 |
| 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 Thomas Donnelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Donnelly (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Donnelly
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Donnelly
Son · 1940 · age 40 · b. ~1900 · 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 — Passaic-County, New Jersey
Open full size
1940 US Federal Census — Passaic-County, New Jersey
Page Contents
26 people indexed on this census page (nara:1940:m-t0627-02433-00021)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Jr. La Rue | 15 | Son | — | New Jersey |
| 2 | Harry La Rue | 74 | Head | — | Michigan |
| 3 | Lillian J. Rider | 65 | Sister-in-law | — | New Jersey |
| 4 | Salvatore Fiduccia | 26 | Head | Finisher | Maine |
| 5 | Adele Fiduccia | 24 | Wife | — | Pennsylvania |
| 6 | Leona Fiduccia | 2 | Daughter | — | New Jersey |
| 7 | Garry Sandford | 30 | Head | Belt Maker | New Jersey |
| 8 | Annette Sandford | 27 | Wife | — | New Jersey |
| 9 | Alice Sandford | 9 | Daughter | — | New Jersey |
| 10 | Louise Sandford | 5 | Daughter | — | New Jersey |
| 11 | Alice Sandford | 62 | Mother | — | England |
| 12 | Sarah E. Briges | 52 | Lodger | Sweater Mender | New Jersey |
| 13 | Hugh Mcgeachie | 34 | Head | Accounting | New Jersey |
| 14 | Mary F. Mcgeachie | 71 | Mother | — | New Jersey |
| 15 | William J. Spainer | 25 | Head | Inspector | Pennsylvania |
| 16 | Rose O. Spainer | 24 | Wife | Bookkeeper | New Jersey |
| 17 | Louis V. Bailey | 35 | Head | Warehouse Mgr | New Jersey |
| 18 | Mary N. Bailey | 37 | Wife | Servant | Canada-Eng |
| 19 | Felix Smith | 47 | Head | Patrolman | New Jersey |
| 20 | Charlotte Smith | 42 | Sister | Stenographer | New Jersey |
| 21 | Judy L. Smith | 40 | Sister | Nurse | New Jersey |
| 22 | Walter F. Campbell | 41 | Head | Teacher | New Jersey |
| 23 | Annabel Campbell | 36 | Wife | Secretary | New Jersey |
| 24 | Elizabeth Donnelly | 76 | Head | — | New Jersey |
| 25 | Thomas Donnelly THIS PERSON | 40 | Son | Clerk | New Jersey |
| 26 | Frederick Byrne | 47 | Head | Washer | New Jersey |
Pedigree Summary
Thomas
Gen 1 · 1 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)