JD
John Donovan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this John Donovan across the 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1916), then head of a 9-person household.
Age 24
b. ~1916
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Donovan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Cranford Tp |
| 1935 Residence (County) | Union |
| Additional Details | |
| Occupation | Auto Clerk |
| Industry | Post Office |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Auto Clerk |
| Township / Ward | Cranford Tp |
| Est. Birth Year | ~1916 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ann Donovan | Daughter | — | 19 | ~1921 |
| Marie Donovan | Daughter | — | 16 | ~1924 |
| James Donovan | Head | — | 49 | ~1891 |
| Eleanor Donovan | Other | — | 26 | ~1914 |
| Patricia Donovan | Other | — | 4 | ~1936 |
| James Donovan | Other | — | 5 | ~1935 |
| James Donovan | Son | — | 26 | ~1914 |
| John Donovan | Son | — | 24 | ~1916 |
| Marie Donovan | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Union, New …
Son, age 4
Union, New Jersey · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donovan |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Union, New …
Son, age 14
Union, New Jersey · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donovan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Union-County, New …
Son, age 24
Union-County, New Jersey · implied b. ~1916 — 9 household members
| Surname | Donovan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Cranford Tp |
| 1935 Residence (County) | Union |
| Occupation | Auto Clerk |
| Industry | Post Office |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Donovan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Donovan (~0.92 confidence) and father James Donovan (~0.92 confidence) and mother Marie Donovan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Donovan
b. ~1870
Source father
● Household
· direct · ~0.92
Father
James Donovan
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Marie Donovan
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Donovan
Son · 1940 · age 24 · b. ~1916 · New Jersey
★ You are viewing this record
Sibling
James Donovan
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Donovan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Donovan
Sibling · 1940 · age 19
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
38 people indexed on this census page (nara:1940:m-t0627-02385-00159)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael Markey | 51 | Head | Truck Driver | Irish Free State |
| 2 | Elizabeth Markey | 49 | Wife | — | Irish Free State |
| 3 | Peter Markey | 20 | Son | Clerk | New Jersey |
| 4 | John Markey | 12 | Son | — | New Jersey |
| 5 | Frank Bringer | 15 | Lodger | — | New Jersey |
| 6 | Morris Rabin | 49 | Head | Retailer Milk | Russia |
| 7 | Celia Rabin | 43 | Wife | — | New York |
| 8 | Sidney Rabin | 20 | Son | Machine Operator | New York |
| 9 | Pearl Rabin | 17 | Daughter | — | New York |
| 10 | Sena Rabin | 15 | Daughter | — | New Jersey |
| 11 | Lillian Rabin | 13 | Daughter | — | New Jersey |
| 12 | Rosemarion Rabin | 11 | Daughter | — | New Jersey |
| 13 | Helen A. Rabin | 10 | Daughter | — | New Jersey |
| 15 | James J. Donovan | 49 | Head | Inspector | New York |
| 16 | Marie Donovan | 49 | Wife | — | New York |
| 17 | John Donovan THIS PERSON | 24 | Son | Auto Clerk | New Jersey |
| 18 | Ann Donovan | 19 | Daughter | Bookkeeping | New Jersey |
| 19 | Marie Donovan | 16 | Daughter | — | New Jersey |
| 20 | James J. Jr. Donovan | 26 | Son | Clerk | New Jersey |
| 21 | Eleanor Donovan | 26 | Daughter in law | — | New Jersey |
| 22 | James J. Iii Donovan | 5 | Grandson | — | New Jersey |
| 23 | Patricia Donovan | 4 | Granddaughter | — | New Jersey |
| 24 | Robert Dunn | 54 | Head | Salesman | New Jersey |
| 25 | Carry Dunn | 55 | Wife | — | New Jersey |
| 26 | Katherine Marsh | 71 | Mother in law | — | New Jersey |
| 27 | Harry Marsh | 18 | Nephew | — | New Jersey |
| 28 | James R. Purick | 69 | Head | Station Master | New York |
| 29 | Anna M. Purick | 62 | Wife | — | New Jersey |
| 30 | James Conway | 60 | Head | Watchman | Pennsylvania |
| 31 | Mary Conway | 53 | Wife | — | New Jersey |
| 32 | John Conway | 26 | Son | Ship Clerk | New Jersey |
| 34 | Fred Roode | 49 | Head | Shop Foreman | Rhode Island |
| 35 | Sadie Roode | 44 | Wife | — | New York |
| 36 | Robert Roode | 20 | Son | Welding Apprentice | New York |
| 37 | Donald Roode | 12 | Son | — | New Jersey |
| 38 | Lawrence Roode | 10 | Son | — | New Jersey |
| 39 | Cecil Howard | 38 | Head | Bookkeeper | New York |
| 40 | Helen Howard | 38 | Wife | — | New York |
Pedigree Summary
John + 3 siblings
Gen 1 · 3 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)