RT
Ralph Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Ralph Thompson across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Head
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Thompson |
| Given Name | Ralph E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Occupation | Accountant Clerk |
| Industry | Textile Mill |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1120 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Accountant Clerk |
| Township / Ward | Wilmington |
| Est. Birth Year | ~1911 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Joan Thompson | Daughter | — | 3 | ~1937 |
| Dorothy Thompson | Spouse | — | 25 | ~1915 |
| Ralph Thompson | Head | — | 29 | ~1911 |
| Ralph Thompson | Son | — | 4 | ~1936 |
Census Appearances
1920
New Castle, …
Son, age 9
New Castle, Delaware · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ralph B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Son, age 19
New Castle, Delaware · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ralph E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Painter |
| Industry | Painting Shop |
| 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 29
New-Castle-County, Delaware · implied b. ~1911 — 4 household members
| Surname | Thompson |
| Given Name | Ralph E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Wilmington |
| 1935 Residence (County) | New Castle |
| Occupation | Accountant Clerk |
| Industry | Textile Mill |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1120 |
| Highest Grade | Hs 3 |
| 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 Ralph Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Thompson (~0.92 confidence) and father John Thompson (~0.92 confidence) and mother Anna Thompson (~0.92 confidence) and mother Anna Thompson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Thompson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
John Thompson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Anna Thompson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Anna Thompson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Thompson
Head · 1940 · age 29 · b. ~1911 · 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-t0627-00552-00701)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George E. Keating | 16 | Son | — | Delaware |
| 42 | Joan E. Keating | 13 | Daughter | — | Delaware |
| 43 | Joseph Williams | 47 | Head | Lathe Operator | Delaware |
| 44 | M. Emma Williams | 54 | Wife | — | Delaware |
| 45 | Joseph Jr. Williams | 19 | Son | Lathe Operator | Delaware |
| 46 | Emma L. Williams | 18 | Daughter | — | Delaware |
| 47 | Mary E. Williams | 17 | Daughter | — | Delaware |
| 48 | Earl Williams | 16 | Son | — | Delaware |
| 49 | Frank Dreher | 53 | Lodger | Painter | Delaware |
| 50 | Anthony J. Pettoruto | 37 | Head | Plasterer | Delaware |
| 51 | Mary M. Pettoruto | 32 | Wife | — | Delaware |
| 52 | Anthony Jr. Pettoruto | 11 | Son | — | Delaware |
| 53 | Dorothy T. Pettoruto | 10 | Daughter | — | Delaware |
| 54 | Delores C. Pettoruto | 7 | Daughter | — | Delaware |
| 55 | Bernice Pettoruto | 2 | Daughter | — | Delaware |
| 56 | Joseph M. Shura | 37 | Head | Clerk Accountant | Delaware |
| 57 | Viola L. Shura | 40 | Wife | Cosmetician | Delaware |
| 58 | Sonya E. Shura | 10 | Daughter | — | Delaware |
| 59 | Oscar Schofield | 45 | Head | Labor | Maryland |
| 60 | Ardella Schofield | 41 | Wife | House Work | Maryland |
| 61 | Mary Collick | 52 | Lodger | House Work | Maryland |
| 62 | Herman O. Fehl | 26 | Head | Gas Station Attendant | Delaware |
| 63 | Lorraine C. Fehl | 31 | Wife | — | Delaware |
| 64 | Lorraine M. Fehl | 2 | Daughter | — | Delaware |
| 65 | Ronald H. Fehl | 1 | Son | — | Delaware |
| 66 | Ralph E. Thompson THIS PERSON | 29 | Head | Accountant Clerk | Delaware |
| 67 | Dorothy L. Thompson | 25 | Wife | — | Delaware |
| 68 | Ralph E. Thompson | 4 | Son | — | Delaware |
| 69 | Joan E. Thompson | 3 | Daughter | — | Delaware |
| 70 | Ellen M. Jeanes | 49 | Head | — | Delaware |
| 71 | John J. Jeanes | 25 | Son | Lathe Operator | Pennsylvania |
| 72 | Anna Bartell | 22 | Daughter | Pie Maker | Pennsylvania |
| 73 | Wilbert Bartell | 28 | Son-in-law | Baker | Pennsylvania |
| 74 | Lamar H. Bartell | 2 | Grandson | — | Delaware |
| 75 | Howard Ricketts | 43 | Head | Huckster | Delaware |
| 76 | Elizabeth Ellygood | 40 | Lodger | House Work | Delaware |
| 77 | Charles G. Wallace | 39 | Head | Chauffeur And Butler | Maryland |
| 78 | Carrie L. Wallace | 33 | Wife | House Work | Virginia |
| 79 | William L. Wallace | 10 | Son | — | New Jersey |
| 80 | Noel J. Bank | 46 | Head | Saxaphone Player | Virginia |
Pedigree Summary
Ralph
Gen 1 · 4 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)