JC
James Cummings — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Cummings across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Louis & James — first a son (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Cummings |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Co-partner |
| Industry | Public Garage |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Co-Partner |
| Township / Ward | Chicago |
| Est. Birth Year | ~1913 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Milton Cummings | Son | — | 31 | ~1909 |
| James Cummings | Son | — | 27 | ~1913 |
| Louis Cummings | Head | — | 65 | ~1875 |
| Tom Cummings | Son | — | 29 | ~1911 |
Census Appearances
1920
Cook, Illinois
Son, age 5
Cook, Illinois · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cummings |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 16
Cook, Illinois · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cumming |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| 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 27
Cook-County, Illinois · implied b. ~1913 — 4 household members
| Surname | Cummings |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Co-partner |
| Industry | Public Garage |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 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 Cummings across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Louis Cummings (~0.92 confidence) and father James Hard (~0.92 confidence) and mother Mabel Cummings (~0.92 confidence) and father William Cummings (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Louis Cummings
b. ~1875
Source father
● Household
· direct · ~0.92
Father
James Hard
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Mabel Cummings
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
William Cummings
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Cummings
Son · 1940 · age 27 · b. ~1913 · Illinois
★ You are viewing this record
Sibling
Milton Cummings
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Tom Cummings
Sibling · 1940 · age 29
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-t0627-00932-00791)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Barry | 75 | Head | — | Eire |
| 42 | Joseph Mcintyre | 43 | Son | — | Eire |
| 43 | Hannah Willon | 65 | Sister | Regis Nurse | Eire |
| 44 | Thomas Willon | 60 | Head | Policeman | Eire |
| 45 | Mary Willon | 57 | Wife | — | Eire |
| 46 | Thomas Willon | 26 | Son | Interviewer | Illinois |
| 47 | Mary Willon | 24 | Daughter | Steno-Keeper | Illinois |
| 48 | Patrick Daley | 52 | Head | Timekeeper | Illinois |
| 49 | Mary Daley | 49 | Wife | — | Illinois |
| 50 | Stella Anderson | 12 | Daughter | — | Illinois |
| 51 | Martin Kennedy | 63 | Father-in-law | — | Eire |
| 52 | Peter B Welch | 63 | Head | — | Illinois |
| 53 | Anna Welch | 30 | Wife | Maid | Illinois |
| 54 | Marie Welch | 28 | Daughter | Clerk-Typist | Illinois |
| 55 | Edward O'Donnell | 39 | Head | Manager | Eire |
| 56 | Mary O'Donnell | 38 | Wife | — | Eire |
| 57 | Nancy O'Donnell | 15 | Daughter | — | Illinois |
| 58 | Edward O'Donnell | 13 | Son | — | Illinois |
| 59 | Lawrence O'Donnell | 10 | Son | — | Illinois |
| 60 | Margaret O'Donnell | 8 | Daughter | — | Illinois |
| 61 | Mary O'Donnell | 5 | Daughter | — | Illinois |
| 62 | Kathleen O'Donnell | 3 | Daughter | — | Illinois |
| 63 | Elizabeth Kohlhof | 52 | Head | — | Illinois |
| 64 | Mildred Kohlhof | 29 | Daughter | Comptometer Opr | Illinois |
| 65 | Edward Welch | 62 | Head | — | Illinois |
| 66 | Mary Welch | 59 | Wife | — | Illinois |
| 67 | Lawrence Brady | 39 | Head | Office Clerk | Illinois |
| 68 | Thyra Brady | 42 | Wife | Book Keeper | Illinois |
| 69 | Lawrence Brady | 16 | Son | — | Illinois |
| 70 | Margaret Brady | 15 | Daughter | — | Illinois |
| 71 | Mary Brady | 11 | Daughter | — | Illinois |
| 72 | Patricia Brady | 3 | Daughter | — | Illinois |
| 73 | George Koulitas | 41 | Head | Clerk | Greece |
| 74 | Freda Koulitas | 40 | Wife | Teacher | Wisconsin |
| 75 | Basil Koulitas | 10 | Son | — | Illinois |
| 76 | Louis Cummings | 65 | Head | Electrician | Michigan |
| 77 | Milton Cummings | 31 | Son | Co-Partner | Illinois |
| 78 | Tom Cummings | 29 | Son | Co-Partner | Illinois |
| 79 | James Cummings THIS PERSON | 27 | Son | Co-Partner | Illinois |
| 80 | Davis O'Connell | 58 | Head | Motorman | Eire |
Pedigree Summary
James + 2 siblings
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)