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James Shannon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Shannon across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Shannon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1930 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Delores Shannon | Daughter | — | 13 | ~1927 |
| Thomas Shannon | Head | — | 41 | ~1899 |
| Thomas Shannon | Son | — | 12 | ~1928 |
| Hugh Mchugh | Other | — | 78 | ~1862 |
| Edward Shannon | Son | — | 5 | ~1935 |
| James Shannon | Son | — | 10 | ~1930 |
| Joseph Shannon | Son | — | 9 | ~1931 |
| Celeste Shannon | Daughter | — | 14 | ~1926 |
| Helen Shannon | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Cook, Illinois
Son, age
Cook, Illinois · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shannon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 10
Cook-County, Illinois · implied b. ~1930 — 9 household members
| Surname | Shannon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Highest Grade | No 4 |
| 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 Shannon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Shannon
Son · 1940 · age 10 · b. ~1930 · Illinois
★ You are viewing this record
Sibling
Delores Shannon
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Shannon
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Shannon
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Celeste Shannon
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Shannon
Sibling · 1940 · age 9
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-t0627-00955-00074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary E. Wornhoff | 51 | Wife | — | Illinois |
| 42 | Joseph Wornhoff | 32 | Son | Paper Ruler | Illinois |
| 43 | Walter C. Lischer | 54 | Head | Printer | Illinois |
| 44 | Susan Lischer | 48 | Wife | — | Illinois |
| 45 | Vera Lischer | 20 | Daughter | — | Missouri |
| 46 | Richard M. Primer | 42 | Head | Bartender Owner | Illinois |
| 47 | Gertrude Primer | 45 | Wife | — | Illinois |
| 48 | John R. Primer | 17 | Son | — | Illinois |
| 49 | Robert P. Primer | 13 | Son | — | Illinois |
| 50 | Richard K. Primer | 8 | Son | — | Illinois |
| 51 | William J. Kendall | 30 | Son-in-law | — | Maryland |
| 52 | John Reich | 52 | Head | Switchman | Illinois |
| 53 | Marie Reich | 46 | Wife | — | Illinois |
| 54 | Gertrude Reich | 22 | Daughter | — | Illinois |
| 55 | Marie Reich | 20 | Daughter | New Worker | Illinois |
| 56 | George E. Olsen | 38 | Head | Appraiser | Illinois |
| 57 | Muriel Olsen | 35 | Wife | — | Canada |
| 58 | George E. Olsen | 9 | Son | — | Illinois |
| 59 | Henry Cox | 73 | Father-in-law | — | Minnesota |
| 60 | Mary J. Cox | 71 | Mother-in-law | — | Minnesota |
| 61 | Harold Fournier | 53 | Head | Installing Power Machine | England |
| 62 | Margaret Fournier | 53 | Wife | — | Canada |
| 63 | John A. Fournier | 23 | Son | — | Vancouver, B.C. |
| 64 | Roy Mccotter | 45 | Head | Reporter | Michigan |
| 65 | Irene Mccotter | 48 | Wife | — | Illinois |
| 66 | Mary Jane Mccotter | 17 | Daughter | — | Illinois |
| 67 | Richard Mccotter | 14 | Son | — | Illinois |
| 68 | Robert Mccotter | 11 | Son | — | Illinois |
| 69 | Mary Dunn | 84 | Mother-in-law | — | Michigan |
| 70 | Thomas R. Shannon | 41 | Head | Office Clerk | Illinois |
| 71 | Helen Shannon | 39 | Wife | — | Illinois |
| 72 | Celeste Shannon | 14 | Daughter | — | Illinois |
| 73 | Delores Shannon | 13 | Daughter | — | Illinois |
| 74 | Thomas Shannon | 12 | Son | — | Illinois |
| 75 | James Shannon THIS PERSON | 10 | Son | — | Illinois |
| 76 | Joseph Shannon | 9 | Son | — | Illinois |
| 77 | Edward Shannon | 5 | Son | — | Illinois |
| 78 | Hugh H. Mchugh | 78 | Father-in-law | — | Ireland |
| 79 | John William Bell | 60 | Head | Carpenter | English |
| 80 | Marie Bell | 55 | Wife | — | Illinois |
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)