TF
Thomas Fitzpatrick — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Thomas Fitzpatrick across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Fitzpatrick |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | waiter |
| Industry | restaurant |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 780 |
| Highest Grade | C 1 |
| 1935 Residence | same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Waiter |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1917 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| James Fitzpatrick | Son | — | 17 | ~1923 |
| Thomas Fitzpatrick | Son | — | 23 | ~1917 |
| Mary Fitzpatrick | Daughter | — | 20 | ~1920 |
| Anthony Fitzpatrick | Son | — | 19 | ~1921 |
| Elizabeth Fitzpatrick | Spouse | — | 51 | ~1889 |
| Thomas Fitzpatrick | Head | — | 60 | ~1880 |
Census Appearances
1920
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 23
Cook-County, Illinois · implied b. ~1917 — 6 household members
| Surname | Fitzpatrick |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | waiter |
| Industry | restaurant |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 780 |
| Highest Grade | C 1 |
| 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 Thomas Fitzpatrick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Fitzpatrick (~0.92 confidence) and father Thomas Fitzpatrick (~0.92 confidence) and mother Elizabeth Fitzpatrick (~0.92 confidence) and mother Margaret Fitzpatrick (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Fitzpatrick
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Thomas Fitzpatrick
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Fitzpatrick
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Margaret Fitzpatrick
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Fitzpatrick
Son · 1940 · age 23 · b. ~1917 · Illinois
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Sibling
Mary Fitzpatrick
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anthony Fitzpatrick
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Fitzpatrick
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
39 people indexed on this census page (nara:1940:m-t0627-00987-00244)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Peter Himpelmann | 17 | son | — | Illinois |
| 42 | Catherine Himpelmann | 76 | mother | — | Jugoslavia |
| 43 | Gustave Dahl | 28 | head | Manager | Illinois |
| 44 | Janet Dahl | 26 | wife | — | Wisconsin |
| 45 | Janet Dahl | 4 | daughter | — | Illinois |
| 46 | Barbara Dahl | 0 | daughter | — | Illinois |
| 47 | Ray Haafmann | 44 | father-in-law | Manufacturer | Wisconsin |
| 48 | Frances Haafmann | 44 | mother-in-law | — | Wisconsin |
| 49 | Christian Kretz | 53 | head | Baker | Germany |
| 50 | Elizabeth Kretz | 54 | wife | — | Germany |
| 51 | Roman Kretz | 35 | son | Handicraft Worker | Illinois |
| 52 | Frank Smith | 57 | head | Sign Painter | New York |
| 53 | Julia Smith | 54 | wife | — | Illinois |
| 54 | Genevieve Smith | 22 | daughter | Office Clerk | Illinois |
| 55 | Dennis Smith | 20 | son | Scraping Machine | Illinois |
| 56 | Thomas Fitzpatrick | 60 | head | Laborer | Illinois |
| 57 | Elizabeth Fitzpatrick | 51 | wife | — | Illinois |
| 58 | Thomas Fitzpatrick THIS PERSON | 23 | son | Waiter | Illinois |
| 59 | Mary Fitzpatrick | 20 | daughter | Messenger | Illinois |
| 60 | Anthony Fitzpatrick | 19 | son | — | Illinois |
| 61 | James Fitzpatrick | 17 | son | — | Illinois |
| 62 | Agnes Norton | 41 | head | — | Illinois |
| 63 | Betty Lou Sebling | 17 | daughter | — | Illinois |
| 64 | Joseph Artwiak | 52 | lodger | Machinist | Poland |
| 65 | Michael Hughes | 47 | head | Plasterer | Illinois |
| 66 | Loretta Hughes | 40 | wife | — | Missouri |
| 67 | June Hughes | 12 | daughter | — | Illinois |
| 68 | George Larson | 20 | step-son | Butcher | Illinois |
| 69 | Sam Friedman | 46 | head | Hostler | Illinois |
| 70 | Agnes Friedman | 49 | wife | — | Iowa |
| 71 | Christine Cheros | 40 | lodger | Waitress | Pennsylvania |
| 72 | Walter E. Reemer | 54 | head | Restaurant | Illinois |
| 73 | Mabel Reemer | 53 | wife | Restaurant | Indiana |
| 74 | Edward Gibbons | 46 | head | Tile Setter | Vermont |
| 75 | Ruth Gibbons | 48 | wife | — | Kansas |
| 76 | James Hamilton | 38 | head | Laborer | Indiana |
| 77 | Inez Hamilton | 32 | wife | — | Indiana |
| 78 | Henry Eckhart | 75 | head | Real Estate | Germany |
| 79 | Alfred Eckhart | 71 | brother | Cigar Maker | Germany |
Search for Thomas Fitzpatrick
All Thomas Fitzpatrick Census Records Discover Fitzpatrick Family TreePedigree Summary
Thomas + 3 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)