HT
Harold Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ashtabula-County, Ohio
Our Model Tree links this Harold Thompson across the 1920, 1930 and 1940 US Censuses in Ashtabula-County, Ohio (XGBoost, ~Confirmed), with identified parents James & James — first a head (b.~1908), then head of a 6-person household.
Age 32
b. ~1908
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ashtabula-County, Ohio |
| Surname | Thompson |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Conneaut City |
| 1935 Residence (County) | Ashtabula |
| Additional Details | |
| Occupation | Welder |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1150 |
| Highest Grade | H-1 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Welder |
| Township / Ward | Conneaut City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Infant Thompson | Daughter | — | ~1940 | |
| Harold Thompson | Head | — | 32 | ~1908 |
| Elizabeth Taylor | Other | — | 58 | ~1882 |
| Robin Thompson | Son | — | 4 | ~1936 |
| Steven Thompson | Son | — | 6 | ~1934 |
| Marian Thompson | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Ashtabula, Ohio
Son, age 12
Ashtabula, Ohio · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Ashtabula, Ohio
Son, age 23
Ashtabula, Ohio · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Missouri |
| Occupation | Sailor |
| Industry | Lakes |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Ashtabula-County, Ohio
Head, age 32
Ashtabula-County, Ohio · implied b. ~1908 — 6 household members
| Surname | Thompson |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Conneaut City |
| 1935 Residence (County) | Ashtabula |
| Occupation | Welder |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1150 |
| Highest Grade | H-1 |
| 1935 Residence | Same House |
| 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 Harold Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Thompson (~0.92 confidence) and father James Thompson (~0.92 confidence) and mother Mae Thompson (~0.92 confidence) and mother May Thompson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Thompson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
James Thompson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Mae Thompson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
May Thompson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Thompson
Head · 1940 · age 32 · b. ~1908 · 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 — Ashtabula-County, Ohio
Open full size
1940 US Federal Census — Ashtabula-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03023-00867)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | H. Lorena Pratt | 22 | Head | Teacher | Pennsylvania |
| 2 | Roy B. Pratt | 19 | Brother | Welder | Pennsylvania |
| 3 | Harold Thompson THIS PERSON | 32 | Head | Welder | Ohio |
| 4 | Marian Thompson | 33 | Wife | — | Ohio |
| 5 | Steven R. Thompson | 6 | Son | — | Ohio |
| 6 | Robin J. Thompson | 4 | Son | — | Ohio |
| 7 | Infant Thompson | 0 | Daughter | — | Ohio |
| 8 | Elizabeth Taylor | 58 | Mother-in-law | Librarian | Ohio |
| 9 | Fred A. Parker | 73 | Head | — | Pennsylvania |
| 10 | Margaret Parker | 74 | Wife | — | Canada-Eng |
| 11 | Agnes Slovey | 68 | Head | — | Ohio |
| 12 | William Patterson | 26 | Nephew | Meat Cutter | Ohio |
| 13 | Margaret Patterson | 26 | Niece | Machine Operator | Pennsylvania |
| 14 | Mary Jane Patterson | 0 | Grand Niece | — | Ohio |
| 15 | Harry J. Tucker | 55 | Head | Captain | Michigan |
| 16 | Myrtle Tucker | 52 | Wife | — | Michigan |
| 17 | Charles Tucker | 18 | Son | — | Ohio |
| 18 | Mary J. Nolan | 65 | Lodger | — | Ohio |
| 19 | Benjamin H. Anthony | 25 | Head | Salesman | Ohio |
| 20 | Margaret Anthony | 25 | Wife | Machine Operator | Ohio |
| 21 | Joseph N. Incorvia | 23 | Head | Car Repairer | Ohio |
| 22 | Virginia Incorvia | 26 | Wife | Machine Operator | Ohio |
| 23 | Howard Taylor | 24 | Head | Laborer | Ohio |
| 24 | Ann Taylor | 22 | Wife | — | Ohio |
| 25 | Harold E. Taylor | 2 | Son | — | Ohio |
| 26 | Richard J. Haller | 26 | Head | Stationary Man | Ohio |
| 27 | Marie Haller | 23 | Wife | — | Michigan |
| 28 | Douglas K. Haller | 2 | Son | — | Ohio |
| 29 | Walter Ryska | 35 | Head | Wheelsman | Minnesota |
| 30 | Martha Ryska | 31 | Wife | Supervisor | Ohio |
| 31 | Carl M. Knee | 67 | Head | — | Pennsylvania |
| 32 | Bertha R. Knee | 60 | Wife | — | Ohio |
| 33 | Lafayette J. Clark | 35 | Head | Watchman | Pennsylvania |
| 34 | Merle Clark | 36 | Wife | — | Ohio |
| 35 | Jack W. Clark | 8 | Son | — | Ohio |
| 36 | Richard L. Clark | 5 | Son | — | Ohio |
| 37 | George Sweeney | 27 | Head | Auto Mechanic | Ohio |
| 38 | Betty E. Sweeney | 24 | Wife | Shipper | Ohio |
| 39 | Robert Hofer | 24 | Head | Brakeman | Ohio |
| 40 | Florence Hofer | 27 | Wife | — | Pennsylvania |
Pedigree Summary
Harold
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)