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James Mccann — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Mccann across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | McCann |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1928 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Mccann | Head | — | 36 | ~1904 |
| Patricia Mccann | Daughter | — | 1 | ~1939 |
| James Mccann | Son | — | 12 | ~1928 |
| George Mccann | Son | — | 7 | ~1933 |
| Mary Mccann | Daughter | — | 13 | ~1927 |
| Mary Mccann | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKeon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York State |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 12
Cook-County, Illinois · implied b. ~1928 — 6 household members
| Surname | McCann |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | 6 |
| 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 Mccann across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mccann
Son · 1940 · age 12 · b. ~1928 · Illinois
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Sibling
Mary Mccann
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mccann
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mccann
Sibling · 1940 · age 7
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-t0627-00958-00469)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lucile Magnusson | 13 | Daughter | — | Illinois |
| 42 | Marian Magnusson | 11 | Daughter | — | Illinois |
| 43 | Robert Motherwell | 55 | Head | Salesman | Ohio |
| 44 | Ruth Motherwell | 46 | Wife | — | Sweden |
| 45 | Claude Motherwell | 22 | Son | Laboratory Clerk | Chicago |
| 46 | Ruth Motherwell | 19 | Daughter | Stenographer | Chicago |
| 47 | Shirley Motherwell | 15 | Daughter | — | Chicago |
| 48 | Frank Jr. Mcnamara | 69 | Head | — | Illinois |
| 49 | Emily Mcnamara | 69 | Wife | — | Illinois |
| 50 | Elmer Mckindle | 39 | Head | Stationary Engineer | Illinois |
| 51 | Clara Mckindle | 39 | Sister | Stenographer | Illinois |
| 52 | Eva Mckindle | 34 | Wife | Machine Operator | Illinois |
| 53 | Edwin P. H. Ellermann | 49 | Head | Postal Clerk | Illinois |
| 54 | Nellie Ellermann | 50 | Wife | — | Missouri |
| 55 | Margaret Ellermann | 13 | Daughter | — | Illinois |
| 56 | Timothy Doyle | 59 | Head | Fireman | Irish Free State |
| 57 | Alice Doyle | 59 | Wife | — | Irish Free State |
| 58 | James Mccann | 36 | Head | Line Man | Illinois |
| 59 | Mary Mccann | 35 | Wife | — | Irish Free State |
| 60 | Mary Mccann | 13 | Daughter | — | Illinois |
| 61 | James Mccann THIS PERSON | 12 | Son | — | Illinois |
| 62 | George Mccann | 7 | Son | — | Illinois |
| 63 | Patricia Mccann | 1 | Daughter | — | Illinois |
| 64 | William J. Lavie | 37 | Head | Carpenter | Illinois |
| 65 | Eleanor Lavie | 35 | Wife | — | Illinois |
| 66 | William J. Lavie | 15 | Son | — | Illinois |
| 67 | Jean Lavie | 14 | Daughter | — | Illinois |
| 68 | Patricia Lavie | 7 | Daughter | — | Illinois |
| 69 | Elmer Heehan | 41 | Head | Auditor | Illinois |
| 70 | Pearl Mary Heehan | 32 | Wife | — | Illinois |
| 71 | Mary-Ellen Heehan | 5 | Daughter | — | Illinois |
| 72 | James F. Phelan | 43 | Head | Book-Keeper | Illinois |
| 73 | Agnes Phelan | 43 | Wife | — | Illinois |
| 74 | John James Phelan | 8 | Son | — | Illinois |
| 75 | Eugene Francis Phelan | 6 | Son | — | Illinois |
| 76 | Michael O'Connor | 33 | Head | — | Illinois |
| 77 | Lillian O'Connor | 37 | Wife | Machinist | Illinois |
| 78 | Joan O'Connor | 7 | Daughter | — | Illinois |
| 79 | Michael O'Connor | 5 | Son | — | Illinois |
| 80 | Max Barth | 55 | Head | Machinist | Michigan |
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)