RC
Richard Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Richard Campbell across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed), with identified parents James & Nellie — first a head (b.~1903), then head of a 3-person household.
Age 37
b. ~1903
Male
Head
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Campbell |
| Given Name | Richard P. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Occupation | Salesman |
| Industry | Vacuum Cleaners |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1500 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Salesman |
| Township / Ward | Wilmington |
| Est. Birth Year | ~1903 |
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 Richard | Age | Birth yr |
|---|---|---|---|---|
| Mildred Campbell | Spouse | — | 33 | ~1907 |
| Richard Campbell | Son | — | 6 | ~1934 |
| Richard Campbell | Head | — | 37 | ~1903 |
Census Appearances
1920
New Castle, …
Son, age 18
New Castle, Delaware · implied b. ~1902 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Delaware |
| Occupation | Draftsman |
| Industry | Dupont Co |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Head, age 28
New Castle, Delaware · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Richard P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Delaware |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Delaware |
| Occupation | Salesman |
| Industry | Aluminum |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35.00 |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Head, age 37
New-Castle-County, Delaware · implied b. ~1903 — 3 household members
| Surname | Campbell |
| Given Name | Richard P. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Occupation | Salesman |
| Industry | Vacuum Cleaners |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1500 |
| Highest Grade | No 6 |
| 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 Richard Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Campbell (~0.92 confidence) and mother Nellie Campbell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Campbell
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
Nellie Campbell
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Richard Campbell
Head · 1940 · age 37 · b. ~1903 · 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-t0627-00549-00030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lee Lester | 43 | head | Janitor | Delaware |
| 2 | Clarence Johnson | 41 | head | Laborer | District Columbia |
| 3 | Sarah Johnson | 48 | wife | — | Maryland |
| 4 | Frances Grimm | 90 | mother-in-law | — | Virginia |
| 5 | Florence Brown | 47 | head | — | Delaware |
| 6 | James Brown | 56 | husband | Asst. Foreman | Italy |
| 7 | Frances Dutton | 29 | daughter | Seamstress | Delaware |
| 8 | Dolores Vilone | 10 | daughter | — | Delaware |
| 9 | William P. Blunt | 20 | head | Truck Driver | Delaware |
| 10 | Mabel Blunt | 20 | wife | — | New Jersey |
| 11 | Mabel Blunt | 0 | daughter | — | Delaware |
| 12 | Morris Chaiken | 69 | head | Proprietor | Russia |
| 13 | Dora Chaiken | 66 | wife | — | Russia |
| 14 | Roy Smith | 41 | head | Painter | Delaware |
| 15 | Margaret E. Smith | 50 | wife | — | Delaware |
| 16 | John Long | 50 | lodger | Printer | Delaware |
| 17 | Van L. Rowaski | 43 | head | Salesman | Iowa |
| 18 | Matilda Rowaski | 40 | wife | Seamstress | New York |
| 19 | Jack Rowaski | 21 | son | Handyman | New York |
| 20 | Andrew Rowaski | 21 | son | Truck Driver | New York |
| 21 | Dorothy Rowaski | 19 | daughter | — | New York |
| 22 | Warren Short | 23 | head | Salesman | Delaware |
| 23 | Esther Short | 23 | wife | Hairdresser | Delaware |
| 24 | James Strauss | 25 | head | Paperhanger | Delaware |
| 25 | Lillian Strauss | 23 | wife | — | Pennsylvania |
| 26 | Ronald J. Strauss | 2 | son | — | Delaware |
| 27 | Eugene Lestardo | 32 | head | Policeman | Delaware |
| 28 | Lucy Lestardo | 30 | wife | Bookkeeper | Delaware |
| 29 | Sophie Lestardo | 65 | mother | — | Italy |
| 30 | Mollie Lestardo | 29 | sister | — | Delaware |
| 31 | Harry Lestardo | 34 | brother | Bell Hop | Delaware |
| 32 | Alfredo Levandastine | 45 | head | Proprietor | Italy |
| 33 | Rose Levandastine | 39 | wife | — | Italy |
| 34 | William Levandastine | 20 | son | Salesman | Delaware |
| 35 | Albert Levandastine | 18 | son | — | Delaware |
| 36 | Angelo Levandastine | 16 | son | — | Delaware |
| 37 | Richard Levandastine | 12 | son | — | Delaware |
| 38 | Richard P. Campbell THIS PERSON | 37 | head | Salesman | Delaware |
| 39 | Mildred Campbell | 33 | wife | — | Pennsylvania |
| 40 | Richard J. Campbell | 6 | son | — | Delaware |
Related Census Records
Pedigree Summary
Richard
Gen 1 · 2 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)