IT
Isaac Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Harris-County, Texas
Our Model Tree links this Isaac Thompson across the 1930 and 1940 US Censuses in Harris-County, Texas (XGBoost, ~Confirmed) — first a head (b.~1909), then head of a 6-person household.
Age 31
b. ~1909
Male
Head
Born: Texas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Harris-County, Texas |
| Surname | Thompson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | Houston |
| 1935 Residence (County) | Harris |
| Additional Details | |
| Occupation | Tool Maker |
| Industry | Oil Well Tool Factory |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1700 |
| Highest Grade | H-4 |
| 1935 Residence | Texas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Tool Maker |
| Township / Ward | Justice Precinct 2 |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Joyce Thompson | Daughter | — | 9 | ~1931 |
| Isaac Thompson | Head | — | 31 | ~1909 |
| Vondalee Thompson | Daughter | — | 1 | ~1939 |
| Marie Thompson | Spouse | — | 30 | ~1910 |
| Marcella Thompson | Daughter | — | 3 | ~1937 |
| Norma Thompson | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Harris, Texas
Son, age 19
Harris, Texas · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ira |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Occupation | Laborer |
| Industry | Cotton Gin |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Harris-County, Texas
Head, age 31
Harris-County, Texas · implied b. ~1909 — 6 household members
| Surname | Thompson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | Houston |
| 1935 Residence (County) | Harris |
| Occupation | Tool Maker |
| Industry | Oil Well Tool Factory |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1700 |
| Highest Grade | H-4 |
| 1935 Residence | Texas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 Isaac Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Isaac Thompson
Head · 1940 · age 31 · b. ~1909 · Texas
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Harris-County, Texas
Open full size
1940 US Federal Census — Harris-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04054-00016)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Exeter Jennings | 32 | Son | Brick Mason | Texas |
| 2 | Alga Jennings | 31 | Daughter | — | Mississippi |
| 3 | Burt Jennings | 17 | Son | — | Texas |
| 4 | Shirley Jennings | 5 | Daughter | — | Texas |
| 5 | Isaac Thompson THIS PERSON | 31 | Head | Tool Maker | Texas |
| 6 | Marie Thompson | 30 | Wife | — | Texas |
| 7 | Joyce Thompson | 9 | Daughter | — | Texas |
| 8 | Norma Thompson | 8 | Daughter | — | Texas |
| 9 | Marcella Thompson | 3 | Daughter | — | Texas |
| 10 | Vondalee Thompson | 1 | Daughter | — | Texas |
| 11 | Tom Williams | 38 | Head | Deliveryman | Texas |
| 12 | Leona Williams | 30 | Wife | Presser | Texas |
| 13 | Ben Crawford | 34 | Head | Meat Cutter | Oklahoma |
| 14 | Faye Crawford | 29 | Wife | — | Texas |
| 15 | Ben Jr. Crawford | 12 | Son | — | Texas |
| 16 | Gurnie Crawford | 9 | Son | — | Texas |
| 17 | Lawrence Crawford | 7 | Son | — | Texas |
| 18 | Howard Crawford | 7 | Son | — | Texas |
| 19 | Iona Crawford | 4 | Daughter | — | Texas |
| 20 | P. J. Crawford | 2 | Son | — | Texas |
| 21 | Louis Glenn | 35 | Head | Pressman | Texas |
| 22 | Mable Glenn | 35 | Wife | — | Texas |
| 23 | Beaulah Jean Glenn | 14 | Daughter | — | Texas |
| 24 | Jean Anderson | 33 | Head | Bookkeeper | New York |
| 25 | John Morris | 42 | Head | Roughneck | Oklahoma |
| 26 | Emma Morris | 30 | Wife | — | Texas |
| 27 | Mary Morris | 11 | Daughter | — | Texas |
| 28 | Johnnie Mae Morris | 9 | Daughter | — | Texas |
| 29 | Betty J. Morris | 4 | Daughter | — | Texas |
| 30 | Erich Denny | 51 | Head | Stevedore | Kentucky |
| 31 | Annie Denny | 50 | Wife | — | Arkansas |
| 32 | Charles H. Cox | 39 | Head | Instructor | Texas |
| 33 | Helen Cox | 37 | Wife | — | Texas |
| 34 | Katherine Cox | 15 | Daughter | — | Texas |
| 35 | Charles S. Cox | 13 | Son | — | Texas |
| 36 | Janey Cox | 1 | Daughter | — | Texas |
| 37 | Walter A. Phillips | 72 | Head | — | Pennsylvania |
| 38 | Walter A. Jr. Phillips | 19 | Son | — | Louisiana |
| 39 | Annie Cox | 72 | Head | — | Texas |
| 40 | George S. Cox | 40 | Head | Contractor | Texas |
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)