JC
John Carr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this John Carr across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 5-person household.
Age 66
b. ~1874
Male
Head
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Carr |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Income (1939) | 372 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Wilmington |
| Est. Birth Year | ~1874 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Carr | Head | — | 66 | ~1874 |
| George Cassidy | Other | — | 53 | ~1887 |
| Thomas Connell | Other | — | 39 | ~1901 |
| Albert Carr | Son | — | 21 | ~1919 |
| Annie Carr | Spouse | — | 60 | ~1880 |
Census Appearances
1920
New Castle, …
Head, age 45
New Castle, Delaware · implied b. ~1875 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Ship Joiner |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Head, age 55
New Castle, Delaware · implied b. ~1875 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Ireland (Free State) |
| Mother's Birthplace | Ireland (Free State) |
| Occupation | Shipfitter |
| Industry | Industrial |
| 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 66
New-Castle-County, Delaware · implied b. ~1874 — 5 household members
| Surname | Carr |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Income (1939) | 372 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| 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 Carr across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Carr
Head · 1940 · age 66 · b. ~1874 · 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-t0627-00552-00780)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kathryn V. Ward | 50 | Sister | Office Clerk | Delaware |
| 42 | Mary A. Ward | 45 | Sister | Office Clerk | Delaware |
| 43 | George A. Bernard | 65 | Head | Foreman | Delaware |
| 44 | Mary C. Bernard | 63 | Wife | — | Delaware |
| 45 | George A. Jr. Bernard | 23 | Son | Shaver | Delaware |
| 46 | Kathleen Bernard | 22 | Daughter | — | Delaware |
| 47 | Margaret De Marco | 36 | Niece | Machine Operator | Virginia |
| 48 | Joseph Collins | 33 | Nephew | Holder On | Virginia |
| 49 | Rose Carroll | 75 | Head | — | Delaware |
| 50 | John Carroll | 46 | Son | Butcher | Delaware |
| 51 | Frances Carroll | 44 | Son | — | Delaware |
| 52 | Paul Carroll | 40 | Son | Pressman | Delaware |
| 53 | Raymond Carroll | 36 | Son | Painter | Delaware |
| 54 | Edward Carroll | 33 | Son | Labour | Delaware |
| 55 | Rosalie Carroll | 40 | Daughter | — | Delaware |
| 56 | John Giammatteo | 39 | Head | Clerk | Delaware |
| 57 | Hilda Giammatteo | 37 | Wife | — | Penna |
| 58 | John Giammatteo | 9 | Son | — | Delaware |
| 59 | William C. Muir | 65 | Lodger | Watchman | Delaware |
| 60 | Louis Gressinger | 64 | Head | Bartender | Delaware |
| 61 | Anna Gressinger | 35 | Daughter | Milliner | Delaware |
| 62 | Elmer C. Hare | 35 | Head | Supervisor | Delaware |
| 63 | Catherine Hare | 35 | Wife | — | Delaware |
| 64 | John J. Carr THIS PERSON | 66 | Head | — | Delaware |
| 65 | Annie G. Carr | 60 | Wife | — | Delaware |
| 66 | Albert F. Carr | 21 | Son | Iron Worker | Delaware |
| 67 | George W. Cassidy | 53 | Lodger | Machinist | Maryland |
| 68 | Thomas Connell | 39 | Lodger | Sorter | Delaware |
| 69 | W. B. Kennedy | 80 | Head | — | Penna |
| 70 | Mary C. Blickel | 50 | Daughter | — | Penna |
| 71 | Marjorie J. Blickel | 24 | Grand Daughter | Stenographer | Delaware |
| 72 | Ruth Bennett | 42 | Head | Teacher | Delaware |
| 73 | Herman Nickerson | 57 | Head | Boxmaker | Maryland |
| 74 | Sara Nickerson | 48 | Wife | — | Penna |
| 75 | I. Jennie Church | 61 | Head | — | Delaware |
| 76 | Elizabeth Burnite | 70 | Head | — | Delaware |
| 77 | Bertrix Burnite | 47 | Daughter | Telephone Operator | Maryland |
| 78 | Amy R. Conaway | 61 | Lodger | Housework | Delaware |
| 79 | Harry Reynolds | 25 | Head | Chemist Helper | Delaware |
| 80 | Margaret Reynolds | 21 | Wife | Examiner | Delaware |
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)