JT
James Todd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Todd across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1922), then head of a 7-person household.
Age 18
b. ~1922
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Todd |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1922 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Rita Todd | Daughter | — | 16 | ~1924 |
| Kathleen Todd | Daughter | — | 13 | ~1927 |
| Edward Todd | Son | — | 5 | ~1935 |
| James Todd | Son | — | 18 | ~1922 |
| Edward Todd | Head | — | 48 | ~1892 |
| John Todd | Son | — | 11 | ~1929 |
| Mary Todd | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Cook, Illinois
Son, age 3
Cook, Illinois · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Todd |
| Given Name | James E Jr |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 13
Cook, Illinois · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Todd |
| Given Name | James Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 18
Cook-County, Illinois · implied b. ~1922 — 7 household members
| Surname | Todd |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 James Todd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Todd (~0.92 confidence) and father James Todd (~0.92 confidence) and mother Lelia Todd (~0.92 confidence) and father Edward Todd (~0.92 confidence) and mother Mary Todd (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Todd
b. ~1887
Source father
● Household
· direct · ~0.92
Father
James Todd
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Lelia Todd
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Edward Todd
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Mary Todd
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Todd
Son · 1940 · age 18 · b. ~1922 · Illinois
★ You are viewing this record
Sibling
Edward Todd
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Todd
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Todd
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Todd
Sibling · 1940 · age 13
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00957-00534)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Todd | 48 | Head | Blacksmith | Eire |
| 42 | Mary Todd | 46 | Wife | — | Eire |
| 43 | James Todd THIS PERSON | 18 | Son | — | Illinois |
| 44 | Rita Todd | 16 | Daughter | — | Illinois |
| 45 | Kathleen Todd | 13 | Daughter | — | Illinois |
| 46 | John Todd | 11 | Son | — | Illinois |
| 47 | Edward Todd | 5 | Son | — | Illinois |
| 48 | Patrick Gallagher | 37 | Head | Serviceman | Eire |
| 49 | Martha Gallagher | 40 | Wife | — | Eire |
| 50 | Thomas L. Gallagher | 13 | Son | — | Illinois |
| 51 | Mary Ann Gallagher | 1 | Daughter | — | Illinois |
| 52 | Ann Gallagher | 30 | Sister | Packs Sliced Bacon | Eire |
| 53 | John Meyer | 43 | Head | Truck Driver | Holland |
| 54 | Gertrude Meyer | 41 | Wife | Cement Contractor | Holland |
| 55 | John Jr Meyer | 16 | Son | — | Illinois |
| 56 | Grace Meyer | 15 | Daughter | — | Illinois |
| 57 | Edward Meyer | 14 | Son | — | Illinois |
| 58 | Raymond Meyer | 12 | Son | — | Illinois |
| 59 | Theresa Meyer | 10 | Daughter | — | Illinois |
| 60 | Martha Meyer | 9 | Daughter | — | Illinois |
| 61 | Margaret Meyer | 7 | Daughter | — | Illinois |
| 62 | Gertrude Meyer | 4 | Daughter | — | Illinois |
| 63 | Charles Scherzinger | 38 | Head | Scale Repair | Illinois |
| 64 | Susan Scherzinger | 42 | Wife | Cleaning Offices | Hungary |
| 65 | Vincent Conforti | 20 | Step Son | Ding Man | Illinois |
| 66 | James Holtry | 16 | Step Son | — | Illinois |
| 67 | Floyd Holtry | 16 | Step Son | — | Illinois |
| 68 | Charles Scherzinger | 7 | Son | — | Illinois |
| 69 | Donald Scherzinger | 6 | Son | — | Illinois |
| 70 | Owen Lavin | 46 | Head | Fireman Private Dept | Eire |
| 71 | Margaret Lavin | 40 | Wife | — | Eire |
| 72 | John Lavin | 13 | Son | — | Illinois |
| 73 | Katherine Lavin | 12 | Daughter | — | Illinois |
| 74 | James Lavin | 10 | Son | — | Illinois |
| 75 | Owen Jr Lavin | 9 | Son | — | Illinois |
| 76 | Margaret Lavin | 4 | Daughter | — | Illinois |
| 77 | Ann Lavin | 2 | Daughter | — | Illinois |
| 78 | William Lynn | 47 | Head | Surface Railway Motorman | Eire |
| 79 | Winifred Lynn | 36 | Wife | — | Eire |
| 80 | Edward Lynn | 12 | Son | — | Illinois |
Pedigree Summary
James + 4 siblings
Gen 1 · 5 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)