TS
Thomas Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cuyahoga-County, Ohio
Our Model Tree links this Thomas Sullivan across the 1910, 1920, 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cuyahoga-County, Ohio |
| Surname | Sullivan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | CLEVELAND |
| 1935 Residence (County) | CUYAHOGA |
| Additional Details | |
| Occupation | Structural Iron Worker |
| Industry | Building Construction |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 2000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Structural Iron Worker |
| Township / Ward | Cleveland |
| Est. Birth Year | ~1908 |
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 |
|---|---|---|---|---|
| Margaret Sullivan | Head | — | 54 | ~1886 |
| Thomas Sullivan | Son | — | 32 | ~1908 |
| William Sullivan | Son | — | 35 | ~1905 |
Census Appearances
1910
Cuyahoga, Ohio
Son, age 2
Cuyahoga, Ohio · implied b. ~1908 — 26 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1920
Cuyahoga, Ohio
Son, age 12
Cuyahoga, Ohio · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Son, age 22
Cuyahoga, Ohio · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Clerk |
| Industry | Electric company |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Son, age 32
Cuyahoga-County, Ohio · implied b. ~1908 — 3 household members
| Surname | Sullivan |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | CLEVELAND |
| 1935 Residence (County) | CUYAHOGA |
| Occupation | Structural Iron Worker |
| Industry | Building Construction |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 2000 |
| 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 Sullivan across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Sullivan (~0.92 confidence) and father John Sullivan (~0.92 confidence) and father Steven Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Sullivan
b. ~1877
Source father
● Household
· direct · ~0.92
Father
John Sullivan
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Steven Sullivan
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Sullivan
Son · 1940 · age 32 · b. ~1908 · Ohio
★ You are viewing this record
Sibling
William Sullivan
Sibling · 1940 · age 35
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 — Cuyahoga-County, Ohio
Open full size
1940 US Federal Census — Cuyahoga-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03205-00254)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Sullivan | 54 | Head | — | Ohio |
| 42 | William Sullivan | 35 | Son | Structural Iron Worker | Ohio |
| 43 | Thomas Sullivan THIS PERSON | 32 | Son | Structural Iron Worker | Ohio |
| 44 | William Erlman | 42 | Head | Salesman | New Jersey |
| 45 | Viola Erlman | 40 | Wife | — | Nebraska |
| 46 | William B. Erlman | 5 | Son | New Worker | New Jersey |
| 47 | Phyllis Erlman | 1 | Daughter | — | Nebraska |
| 48 | William W. Kollra | 50 | Head | Cabinet Maker | New York |
| 49 | Margaret Kollra | 54 | Wife | — | Germany |
| 50 | Kenneth Penrich | 29 | Head | Vocational Instructor | Ohio |
| 51 | Elsie Penrich | 24 | Wife | — | Pennsylvania |
| 52 | Bruce Penrich | 1 | Son | — | Ohio |
| 53 | Clifford Challender | 46 | Head | Painter | Ohio |
| 54 | Alice Challender | 47 | Wife | — | Ohio |
| 55 | Martin P. Kennedy | 33 | Head | Crane Operator | Pennsylvania |
| 56 | Viola Kennedy | 26 | Wife | Timekeeper | Ohio |
| 57 | Horace Rescorl | 32 | Head | Mill Operator | Michigan |
| 58 | Frieda Rescorl | 34 | Wife | — | Michigan |
| 59 | Peter Walsh | 47 | Head | Laborer | Irish Free State |
| 60 | Martha Walsh | 38 | Wife | — | Ohio |
| 61 | James Walsh | 16 | Son | Delivery Boy | Ohio |
| 62 | John Walsh | 13 | Son | — | Ohio |
| 63 | Robert Walsh | 12 | Son | — | Ohio |
| 64 | Patricia Walsh | 9 | Daughter | — | Ohio |
| 65 | Bride Walsh | 7 | Daughter | — | Ohio |
| 66 | Thomas Wilson | 77 | Head | — | England |
| 67 | Mary Wilson | 76 | Wife | — | England |
| 68 | Ruth Gilmore | 44 | Head | — | Ohio |
| 69 | Robert Gilmore | 23 | Son | Laborer | Ohio |
| 70 | Jack Gallagher | 27 | Head | Salesman | Canada-English |
| 71 | Dorothy Gallagher | 25 | Wife | Playground Instructor | Ohio |
| 72 | Ruth Gallagher | 5 | Daughter | — | Ohio |
| 73 | Doris Gallagher | 4 | Daughter | — | Ohio |
| 74 | Harold Hogg | 38 | Head | Stock Clerk | Northern Ireland |
| 75 | Ella Hogg | 38 | Wife | — | Northern Ireland |
| 76 | S. Ernest Hogg | 9 | Son | — | Ohio |
| 77 | John J. Gallagher | 54 | Head | Boilermaker | Scotland |
| 78 | Elizabeth Gallagher | 53 | Wife | — | Scotland |
| 79 | James I. Mcneilly | 36 | Son-in-law | Laborer | Scotland |
| 80 | Elizabeth Mcneilly | 33 | Daughter | Bookbinder | Canada-English |
Pedigree Summary
Thomas + 1 sibling
Gen 1 · 6 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)