TF
Thomas Farrell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this Thomas Farrell across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed), with identified parents John & Thomas — first a son (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Farrell |
| Given Name | Thomas H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cincinnati |
| Est. Birth Year | ~1909 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Alice Farrell | Daughter | — | 32 | ~1908 |
| Anna Farrell | Head | — | 61 | ~1879 |
| Thomas Farrell | Son | — | 31 | ~1909 |
Census Appearances
1920
Hamilton, Ohio
Son, age 10
Hamilton, Ohio · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | New York |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Hamilton, Ohio
Son, age 21
Hamilton, Ohio · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | Thomas J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | New York |
| Mother's Birthplace | Ohio |
| Occupation | Apprentice |
| Industry | Printing |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Son, age 31
Hamilton-County, Ohio · implied b. ~1909 — 3 household members
| Surname | Farrell |
| Given Name | Thomas H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati |
| 1935 Residence (County) | Hamilton |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Farrell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Farrell (~0.92 confidence) and father Thomas Farrell (~0.92 confidence) and mother Anna Farrell (~0.92 confidence) and mother Anna Farrell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Farrell
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Thomas Farrell
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Anna Farrell
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Anna Farrell
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Farrell
Son · 1940 · age 31 · b. ~1909 · Ohio
★ You are viewing this record
Sibling
Alice Farrell
Sibling · 1940 · age 32
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 — Hamilton-County, Ohio
Open full size
1940 US Federal Census — Hamilton-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03189-00494)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph H Moeller | 42 | Head | Yard-Master | Ohio |
| 42 | Agnes M Moeller | 39 | Wife | — | Indiana |
| 43 | Robert J Moeller | 2 | Son | — | Ohio |
| 44 | Frederick J Seiver | 65 | Head | Traffic Manager | Ohio |
| 45 | Anna M Seiver | 64 | Wife | — | Ohio |
| 46 | Alice C Tobling | 26 | Daughter | Cashier | Ohio |
| 47 | Boeh-Lydia | 71 | Head | Bookkeeper | Ohio |
| 48 | Clara Boeh-Lydia | 83 | Sister | — | Ohio |
| 49 | Erwin Boeh-Lydia | 68 | Brother | — | Ohio |
| 50 | Anna Krapf | 41 | Servant | Servant | Russia |
| 51 | Luella Murphy | 53 | Head | — | Ohio |
| 52 | Arthur Dedeo | 33 | Lodger | Tailor | Italy |
| 53 | Carl Ripperdan | 37 | Lodger | Teacher | Indiana |
| 54 | Henry A Niehaus | 73 | Head | — | Germany |
| 55 | Clara A Niehaus | 31 | Daughter | Bookkeeper | Ohio |
| 56 | Marion E Niehaus | 29 | Daughter | — | Ohio |
| 57 | Sibina Crane | 57 | Head | Machine Folder | Ohio |
| 58 | Charles L Kelley | 51 | Head | Shoe-Laster | Kentucky |
| 59 | Gladys N Kelley | 44 | Wife | — | Ohio |
| 60 | Lester T Snyder | 29 | Head | Truck Driver | Ohio |
| 61 | Virginia B Snyder | 26 | Wife | — | Kentucky |
| 62 | Ralph L Snyder | 8 | Son | — | Ohio |
| 63 | Anna Farrell | 61 | Head | — | Ohio |
| 64 | Alice M Farrell | 32 | Daughter | Retail-Cosmetic Clerk | Ohio |
| 65 | Thomas H Farrell THIS PERSON | 31 | Son | — | Ohio |
| 66 | Milton T Leek | 54 | Head | Steam-Railroad Engineer | Ohio |
| 67 | Teresa D Leek | 50 | Wife | — | Italy |
| 68 | Albert C Leek | 17 | Son | — | Ohio |
| 69 | Mary E Leek | 16 | Daughter | — | Ohio |
| 70 | Robert W Leek | 7 | Son | — | Ohio |
| 71 | Harry C Kloecker | 67 | Head | Adjuster | Ohio |
| 72 | Adelia Kloecker | 62 | Wife | — | Ohio |
| 73 | Marion Kloecker | 36 | Daughter | Stenographer | Ohio |
| 74 | Raymond F Kloecker | 33 | Son | Multigrapher | Ohio |
| 75 | Harry J Kloecker | 31 | Son | Manager Branch-Office | Ohio |
| 76 | Genevra R Kloecker | 27 | Daughter | School-Teacher | Ohio |
| 77 | Paul A Kloecker | 25 | Son | Platemaker | Ohio |
| 78 | Marjorie D Kloecker | 21 | Daughter | — | Ohio |
| 79 | Elizabeth Kloecker | 19 | Daughter | — | Ohio |
| 80 | Albert E Lawrence | 54 | Head | Engineer | Ohio |
Pedigree Summary
Thomas + 1 sibling
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)