JM
James Mcguire — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Mcguire across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | McGuire |
| Given Name | James J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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 | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcguire | Daughter | — | 9 | ~1931 |
| Florence Mcguire | Daughter | — | 12 | ~1928 |
| Thomas Mcguire | Head | — | 38 | ~1902 |
| Thomas Mcguire | Son | — | 7 | ~1933 |
| James Mcguire | Son | — | 11 | ~1929 |
| Lauren Mcguire | Son | — | 5 | ~1935 |
| John Mcguire | Son | — | 10 | ~1930 |
| Mary Mcguire | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGuire |
| Given Name | James J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Ireland |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 11
Cook-County, Illinois · implied b. ~1929 — 8 household members
| Surname | McGuire |
| Given Name | James J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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 Mcguire across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mcguire
Son · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Mary Mcguire
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Mcguire
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcguire
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lauren Mcguire
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mcguire
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-t0627-00956-00205)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Irene Watson | 11 | daughter | — | Illinois |
| 42 | David Watson | 9 | son | — | Illinois |
| 43 | Mary Smith | 66 | Head | — | Indiana |
| 44 | Charles Kirk | 37 | Head | Motorman | Iowa |
| 45 | Jennie Kirk | 71 | Mother | — | Ohio |
| 46 | John M. Oury | 66 | Head | Water Proof. | Virginia |
| 47 | Esther M. Oury | 63 | wife | — | Illinois |
| 48 | Edmund Oury | 19 | son | Damp Proofer | Illinois |
| 49 | Ralph Oury | 22 | son | Damp Proofer | Illinois |
| 50 | Dorothy Oury | 20 | daughter in law | — | West Virginia |
| 51 | Margaret Regan | 74 | mother in law | — | Illinois |
| 52 | Flora Gerhart | 74 | Lodger | — | Ohio |
| 53 | Julius Soling | 54 | Head | — | New York |
| 54 | Emma Soling | 44 | wife | — | Austria |
| 55 | Nathan Soling | 19 | son | Newsworker | Illinois |
| 56 | William Soling | 18 | son | Newsworker | Illinois |
| 57 | Albert Soling | 16 | son | — | Illinois |
| 58 | Joseph Soling | 13 | son | — | Illinois |
| 59 | Lila Soling | 10 | daughter | — | Illinois |
| 60 | Florence Soling | 7 | daughter | — | Illinois |
| 61 | Harold Soling | 6 | son | — | Illinois |
| 62 | Joan Soling | 4 | daughter | — | Illinois |
| 63 | Geraldine Soling | 4 | daughter | — | Illinois |
| 64 | Ural Keel | 45 | Head | Traffic Clerk | Kentucky |
| 65 | Magdalene Keel | 34 | wife | — | Kentucky |
| 66 | Frances Keel | 9 | son | — | Illinois |
| 67 | James Keel | 8 | son | — | Illinois |
| 68 | Bernard Keel | 7 | son | — | Illinois |
| 69 | George Keel | 5 | son | — | Illinois |
| 70 | Margaret Keel | 4 | daughter | — | Illinois |
| 71 | William Keel | 2 | son | — | Illinois |
| 72 | Thomas Mcguire | 38 | Head | Machinist | Irish Free State |
| 73 | Mary Ellen Mcguire | 40 | wife | — | Irish Free State |
| 74 | Florence M. Mcguire | 12 | daughter | — | Illinois |
| 75 | James J. Mcguire THIS PERSON | 11 | son | — | Illinois |
| 76 | John Mcguire | 10 | son | — | Illinois |
| 77 | Mary Ellen Mcguire | 9 | daughter | — | Illinois |
| 78 | Thomas M. Mcguire | 7 | son | — | Illinois |
| 79 | Lauren Mcguire | 5 | son | — | Illinois |
| 80 | Jacob De Jacobi | 47 | Head | Truck Driver | 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)