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Thomas Duffy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Franklin-County, Ohio
Our Model Tree links this Thomas Duffy across the 1920, 1930 and 1940 US Censuses in Franklin-County, Ohio (XGBoost, ~Confirmed), with identified parents Bernard & Thomas — first a head (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Franklin-County, Ohio |
| Surname | Duffy |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Additional Details | |
| Occupation | Laborer |
| Industry | Timber Co |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 958 |
| Highest Grade | C 4 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Laborer |
| Township / Ward | Columbus |
| Est. Birth Year | ~1913 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Louise Duffy | Spouse | — | 30 | ~1910 |
| Nelle Keller | Other | — | 27 | ~1913 |
| Kathleen Duffy | Daughter | — | ~1940 | |
| Kenneth Keller | Other | — | 28 | ~1912 |
| Thomas Duffy | Head | — | 27 | ~1913 |
Census Appearances
1920
Franklin, Ohio
Son, age 7
Franklin, Ohio · implied b. ~1913 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | England |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Franklin, Ohio
Son, age 17
Franklin, Ohio · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Thomas E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | England |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Franklin-County, Ohio
Head, age 27
Franklin-County, Ohio · implied b. ~1913 — 5 household members
| Surname | Duffy |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Occupation | Laborer |
| Industry | Timber Co |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 958 |
| Highest Grade | C 4 |
| 1935 Residence | Ohio |
| 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 Duffy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bernard Duffy (~0.92 confidence) and father Thomas Duffy (~0.92 confidence) and mother Emma Duffy (~0.92 confidence) and mother Ursula Duffy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bernard Duffy
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Thomas Duffy
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Emma Duffy
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Ursula Duffy
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Duffy
Head · 1940 · age 27 · b. ~1913 · Ohio
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Franklin-County, Ohio
Open full size
1940 US Federal Census — Franklin-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03243-00148)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joan Brown | 4 | Daughter | — | Ohio |
| 2 | Shirley Brown | 1 | Daughter | — | Ohio |
| 3 | John Boyd | 37 | Head | Cab Driver | Ohio |
| 4 | Mary Boyd | 22 | Wife | Clerk | Kentucky |
| 5 | John S. Boyd | 1 | Son | — | Ohio |
| 6 | Violet Elfman | 18 | Niece | Housekeeper | Ohio |
| 7 | Otto Lillie | 19 | Lodger | Painter | Ohio |
| 8 | Thomas Duffy THIS PERSON | 27 | Head | Laborer | Ohio |
| 9 | Louise Duffy | 30 | Wife | — | Ohio |
| 10 | Kathleen Duffy | 0 | Daughter | — | Ohio |
| 11 | Kenneth Keller | 28 | Lodger | Helper | Ohio |
| 12 | Nelle Keller | 27 | Lodger | Waitress (Ass'T) | Ohio |
| 13 | Hubert Taylor | 41 | Head | Clerk | Ohio |
| 14 | Myrtle Taylor | 40 | Wife | Ymca | Ohio |
| 15 | Eloise Taylor | 18 | Daughter | — | Ohio |
| 16 | Robert Taylor | 14 | Son | — | Ohio |
| 17 | Pauline Taylor | 12 | Daughter | — | Ohio |
| 18 | Richard Taylor | 8 | Son | — | Ohio |
| 19 | Robert O. Glick | 33 | Head | Manager | Ohio |
| 20 | Cecelia Glick | 32 | Wife | — | Virginia |
| 21 | Robert Jr. Glick | 9 | Son | — | Ohio |
| 22 | J. Neal Glick | 12 | Son | — | Ohio |
| 23 | Martha Miketo | 19 | Lodger | — | Ohio |
| 24 | Thomas Zecher | 39 | Head | Window Trimmer | West Virginia |
| 25 | Clara E. Zecher | 41 | Wife | — | Ohio |
| 26 | Virginia M. Zecher | 17 | Daughter | — | Ohio |
| 27 | Jean Zecher | 15 | Daughter | — | Ohio |
| 28 | Eulalia Hoch | 72 | Mother-in-law | — | Ohio |
| 29 | Eugene F. Ninders | 36 | Head | Clerk | Ohio |
| 30 | Mary C. Ninders | 44 | Wife | — | Ohio |
| 31 | Nellie Harkless | 21 | Step-dau | — | Ohio |
| 32 | Eugene O. Ninders | 8 | Son | — | Ohio |
| 33 | Patricia Ninders | 7 | Daughter | — | Ohio |
| 34 | Leo A. Connolly | 45 | Head | Metal Finisher | Ohio |
| 35 | Thomas Connolly | 17 | Son | — | Ohio |
| 36 | Leo Jr. Connolly | 11 | Son | — | Ohio |
| 37 | Richard Connolly | 5 | Son | — | Ohio |
| 38 | Alvia Durant | 42 | Head | Salesman | Ohio |
| 39 | Evelyn Durant | 44 | Wife | — | Ohio |
| 40 | Neva Bibler | 23 | Niece | — | Ohio |
Pedigree Summary
Thomas
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)