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John Bradley — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this John Bradley across the 1910, 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1898), then head of a 3-person household.
Age 42
b. ~1898
Male
Head
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Bradley |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Occupation | Machinist |
| Industry | Cork Manufact. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2700 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Machinist |
| Township / Ward | Wilmington |
| Est. Birth Year | ~1898 |
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 |
|---|---|---|---|---|
| Betty Bradley | Daughter | — | 16 | ~1924 |
| John Bradley | Head | — | 42 | ~1898 |
| Margaret Bradley | Spouse | — | 39 | ~1901 |
Census Appearances
1910
New Castle, …
Son, age 13
New Castle, Delaware · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1920
New Castle, …
Son, age 23
New Castle, Delaware · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Other, age 33
New Castle, Delaware · implied b. ~1897 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | John A. |
| Relationship to Head | Son-in-law |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Delaware |
| Age at First Marriage | 27 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Cork Mfg. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Head, age 42
New-Castle-County, Delaware · implied b. ~1898 — 3 household members
| Surname | Bradley |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Occupation | Machinist |
| Industry | Cork Manufact. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2700 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Bradley across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Bradley (~0.92 confidence) and father John Bradley (~0.92 confidence) and mother Bridget Bradley (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Bradley
b. ~1874
Source father
● Household
· direct · ~0.92
Father
John Bradley
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Bridget Bradley
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Bradley
Head · 1940 · age 42 · b. ~1898 · Delaware
★ 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 — New-Castle-County, Delaware
Open full size
1940 US Federal Census — New-Castle-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00551-00402)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jeanette Barkley | 38 | Daughter | Practical Nurse | Delaware |
| 42 | Paul A. Spragg | 48 | Head | Night Watchman | Delaware |
| 43 | Nellie M. Spragg | 52 | Wife | — | Delaware |
| 44 | Paul Jr. Spragg | 12 | Son | — | Delaware |
| 45 | John Benson | 44 | Head | Foreman | Delaware |
| 46 | Anna Benson | 44 | Wife | School Teacher | Pennsylvania |
| 47 | Irving M. Tatman | 61 | Head | Bank Guard | Delaware |
| 48 | Sarah H. Tatman | 66 | Wife | — | Delaware |
| 49 | Preston S. Tatman | 32 | Son | Coal & Oil Salesman | Delaware |
| 50 | Charles W. Dangel | 44 | Head | Watchman | Delaware |
| 51 | Mae Dangel | 44 | Wife | Machine Operator | Maryland |
| 52 | Henry B. Moore | 49 | Head | Fireman | Delaware |
| 53 | Ruby Moore | 50 | Wife | — | Delaware |
| 54 | — | None | — | — | — |
| 55 | Isaac Means | 47 | Head | Auditor | Virginia |
| 56 | Nelly Means | 40 | Wife | — | Delaware |
| 57 | Doris Means | 18 | Daughter | — | Delaware |
| 58 | Jean Means | 15 | Daughter | — | Delaware |
| 59 | Crosby Wiggins | 70 | Head | Night Watchman | Delaware |
| 60 | Minnie Wiggins | 67 | Wife | — | Delaware |
| 61 | William Morse | 64 | Head | Electrical Contractor | New Jersey |
| 62 | Sara C. Morse | 62 | Wife | — | New Jersey |
| 63 | Evelyn Andrick | 36 | Daughter | Beautician | Pennsylvania |
| 64 | Phyllis Andrick | 3 | Granddaughter | — | Delaware |
| 65 | Elizabeth Reed | 60 | Sister-in-law | — | New Jersey |
| 66 | H. Miller Smith | 46 | Head | Cloth Buyer | Delaware |
| 67 | Madeline Smith | 43 | Wife | — | Delaware |
| 68 | Nicholas Curchio | 34 | Head | Printer | Delaware |
| 69 | Arminie Curchio | 66 | Mother | — | Italy |
| 70 | Alfred Curchio | 36 | Brother | Printer | Delaware |
| 71 | John Curchio | 38 | Brother | Custom Inspector | Delaware |
| 72 | Edmund Bersham | 60 | Head | Assist. Advertising | England |
| 73 | Nellie Bersham | 58 | Wife | — | New York |
| 74 | Nettie Bersham | 75 | Sister-in-law | — | New York |
| 75 | George B. Reynolds | 65 | Head | — | Pennsylvania |
| 76 | Mollie Reynolds | 63 | Wife | — | Pennsylvania |
| 77 | Gertrude Justine | 45 | Niece | — | Pennsylvania |
| 78 | John A. Bradley THIS PERSON | 42 | Head | Machinist | Delaware |
| 79 | Margaret Bradley | 39 | Wife | — | Delaware |
| 80 | Betty Bradley | 16 | Daughter | — | Delaware |
Pedigree Summary
John
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)