ID
Isaac Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Harris-County, Texas
Our Model Tree links this Isaac Davis across the 1920, 1930 and 1940 US Censuses in Harris-County, Texas (XGBoost, ~Confirmed), with identified parents James & Evelina — first a head (b.~1900), then head of a 4-person household.
Age 40
b. ~1900
Male
Head
Born: Texas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Harris-County, Texas |
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | Houston City |
| 1935 Residence (County) | Harris |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steel Plant |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 520 |
| Highest Grade | No 3 |
| 1935 Residence | Texas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Laborer |
| Township / Ward | Houston City |
| Est. Birth Year | ~1900 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Lois Davis | Daughter | — | 7 | ~1933 |
| Willie Haynes | Daughter | — | 13 | ~1927 |
| Jeanette Davis | Spouse | — | 34 | ~1906 |
| Isaac Davis | Head | — | 40 | ~1900 |
Census Appearances
1920
Harris, Texas
Son, age 19
Harris, Texas · implied b. ~1901 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isah |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Laborer |
| Industry | Rail Road |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1930
Harris, Texas
Son, age 30
Harris, Texas · implied b. ~1900 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isaiah |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Texas |
| Age at First Marriage | 19 |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Mechanic Helper |
| Industry | Auto Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Harris-County, Texas
Head, age 40
Harris-County, Texas · implied b. ~1900 — 4 household members
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | Houston City |
| 1935 Residence (County) | Harris |
| Occupation | Laborer |
| Industry | Steel Plant |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 520 |
| Highest Grade | No 3 |
| 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 Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Davis (~0.92 confidence) and mother Evelina Davis (~0.92 confidence) and father Joe Davis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Davis
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Evelina Davis
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
Joe Davis
b. ~1872
Source father
● Household
· direct · ~0.92
This person
Anchor record
Isaac Davis
Head · 1940 · age 40 · b. ~1900 · Texas
★ 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 — 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-t0627-04190-00040)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gary Indabelle | 21 | Daughter | Housework | Texas |
| 42 | Isaac Davis | 70 | Head | — | Texas |
| 43 | Mary Davis | 63 | Wife | — | Texas |
| 44 | Rebecca Davis | 19 | Granddaughter | Maid | New York |
| 45 | Bettie Davis | 1 | Granddaughter | — | Texas |
| 46 | Lillie Ridge | 23 | Head | — | Texas |
| 47 | Arthur Richardson | 37 | Head | Laborer | Texas |
| 48 | Sarah Richardson | 37 | Wife | Housework | Texas |
| 49 | Winifred Richardson | 16 | Son | — | Texas |
| 50 | Arthur Jr. Richardson | 14 | Son | — | Texas |
| 51 | Christine Richardson | 12 | Daughter | — | Texas |
| 52 | Charley Carr | 27 | Head | Longshoreman | Texas |
| 53 | Willie May Carr | 26 | Wife | — | Texas |
| 54 | Warren Cummings | 54 | Head | Track Laborer | Texas |
| 55 | Lillie Cummings | 52 | Wife | — | Texas |
| 56 | Ishmael Gadberry | 34 | Head | Longshoreman | Texas |
| 57 | Lonnie Gadberry | 8 | Son | — | Texas |
| 58 | Freeman Genoa | 36 | Head | Porter | Texas |
| 59 | Johnie Genoa | 37 | Wife | Porter | Texas |
| 60 | Joan Genoa | 11 | Daughter | — | Texas |
| 61 | Joe Brown | 38 | Head | Porter | Louisiana |
| 62 | Irene Brown | 25 | Wife | Servant | Texas |
| 63 | Elijah Whitted | 45 | Head | Job Work | La |
| 64 | Alice Whitted | 30 | Wife | — | Texas |
| 65 | Louise Lole | 20 | Lodger | Maid | La |
| 66 | Ephram Williams | 60 | Head | — | Texas |
| 67 | Jennie Williams | 57 | Wife | — | Texas |
| 68 | Mitchel Bryant | 33 | Head | Attendant | Texas |
| 69 | J. C. Williams | 26 | Son | Attendant | Texas |
| 70 | Isaac Davis THIS PERSON | 40 | Head | Laborer | Texas |
| 71 | Jeanette Davis | 34 | Wife | Cook | La |
| 72 | Willie Haynes | 13 | Daughter | — | Texas |
| 73 | Lois Davis | 7 | Daughter | — | Texas |
| 74 | — | None | — | — | — |
| 75 | Andrew Anderson | 36 | Head | Truck Driver | Texas |
| 76 | Blanche Anderson | 35 | Wife | Cook | Texas |
| 77 | Saul Washington | 45 | Head | — | Texas |
| 78 | Georgia Washington | 39 | Wife | — | Texas |
| 79 | Mildred Washington | 7 | Daughter | — | Texas |
| 80 | Mattie Jane Washington | 6 | Daughter | — | Texas |
Pedigree Summary
Isaac
Gen 1 · 3 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)