JC
James Clarke — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Clarke across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Clarke |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1926 |
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 |
|---|---|---|---|---|
| Willie Clarke | Head | — | 49 | ~1891 |
| Rose Clarke | Spouse | — | 45 | ~1895 |
| Mary Clarke | Daughter | — | 17 | ~1923 |
| John Clarke | Son | — | 8 | ~1932 |
| Louise Clarke | Daughter | — | 16 | ~1924 |
| William Clarke | Son | — | 20 | ~1920 |
| James Clarke | Son | — | 14 | ~1926 |
Census Appearances
1930
Cook, Illinois
Son, age 3
Cook, Illinois · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Klark |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| 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 14
Cook-County, Illinois · implied b. ~1926 — 7 household members
| Surname | Clarke |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | 7 |
| 1935 Residence | Same house |
| 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 Clarke across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Clarke
Son · 1940 · age 14 · b. ~1926 · Illinois
★ You are viewing this record
Sibling
Louise Clarke
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Clarke
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Clarke
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Clarke
Sibling · 1940 · age 17
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-t0627-00999-00543)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Brodie | 21 | Son | Welder | Illinois |
| 2 | Russel Melany | 26 | Head | Welder | Illinois |
| 3 | Mary Melany | 28 | Wife | Bookkeeper | Illinois |
| 4 | Maurice Lee | 20 | Piece | Housekeeper | Illinois |
| 5 | Francis Coughlan | 50 | Head | Conductor | Pennsylvania |
| 6 | Lillie Coughlan | 49 | Wife | — | Illinois |
| 7 | Edward Coughlan | 22 | Son | Clerk | Wisconsin |
| 8 | Elizabeth Coughlan | 19 | Daughter | Clerk | Illinois |
| 9 | Robert Coughlan | 18 | Son | Clerk | Illinois |
| 10 | James Coughlan | 15 | Son | — | Illinois |
| 11 | Rosemary Coughlan | 13 | Daughter | — | Illinois |
| 12 | Patricia Coughlan | 8 | Daughter | — | Illinois |
| 13 | Hugh Hubbard | 54 | Head | Pasteurizer | Wisconsin |
| 14 | Minnie Hubbard | 57 | Wife | — | Wisconsin |
| 15 | Lydon Hubbard | 33 | Son | Attendant | Wisconsin |
| 16 | Alma Hubbard | 28 | Daughter | — | Wisconsin |
| 17 | Karen Hubbard | 18 | Daughter | — | Illinois |
| 18 | Julia Hanson | 63 | Head | Feeder | Wisconsin |
| 19 | Joseph Walinska | 37 | Head | Salesman | Washington |
| 20 | Marguerite Walinska | 37 | Wife | — | Illinois |
| 21 | Joseph Walinska | 11 | Son | — | Illinois |
| 22 | Dolores Walinska | 6 | Daughter | — | Illinois |
| 23 | Erwin Hammer | 29 | Head | Attorney | Illinois |
| 24 | Mary Hammer | 31 | Wife | — | Illinois |
| 25 | Mary A Hammer | 3 | Daughter | — | Illinois |
| 26 | Priscilla Hammer | 1 | Daughter | — | Illinois |
| 27 | Max Hoppe | 55 | Head | Woodwork | Germany |
| 28 | Meta Hoppe | 52 | Wife | — | Germany |
| 29 | Willie Clarke | 49 | Head | Representative | New York |
| 30 | Rose Clarke | 45 | Wife | Sales | Illinois |
| 31 | William Clarke | 20 | Son | — | Illinois |
| 32 | Mary Clarke | 17 | Daughter | — | Illinois |
| 33 | Louise Clarke | 16 | Daughter | — | Illinois |
| 34 | James Clarke THIS PERSON | 14 | Son | — | Illinois |
| 35 | John Clarke | 8 | Son | — | Pennsylvania |
| 36 | Charles Smetney | 52 | Head | — | Austria |
| 37 | Ottilea Smetney | 52 | Wife | — | Austria |
| 38 | Hilda Smetney | 28 | Daughter | Secretary | Illinois |
| 39 | Ruth Smetney | 24 | Daughter | Secretary | Illinois |
| 40 | Barthol Rein | 52 | Head | Janitor | Russia |
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)