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Robert Jackson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Alabama
Our Model Tree links this Robert Jackson across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Alabama (XGBoost, ~Confirmed), with identified parents Mort & Montgomery — first a son (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Son
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Alabama |
| Surname | Jackson |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham City Precinct 9 |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Clerk |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 2040 |
| Highest Grade | C 4 |
| 1935 Residence | Same Place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Clerk |
| Township / Ward | Birmingham City Precinct 9 |
| Est. Birth Year | ~1914 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Mort Jackson | Head | — | 57 | ~1883 |
| Donald Jackson | Son | — | 15 | ~1925 |
| Robert Jackson | Son | — | 26 | ~1914 |
| Maye Jackson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Jefferson, Alabama
Son, age 5
Jefferson, Alabama · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Robert S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Jefferson, Alabama
Son, age 15
Jefferson, Alabama · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Jefferson-County, Alabama
Son, age 26
Jefferson-County, Alabama · implied b. ~1914 — 4 household members
| Surname | Jackson |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Birmingham City Precinct 9 |
| 1935 Residence (County) | Jefferson |
| Occupation | Clerk |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 2040 |
| Highest Grade | C 4 |
| 1935 Residence | Same Place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Robert Jackson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Mort Jackson (~0.92 confidence) and father Montgomery Jackson (~0.92 confidence) and mother Mary Jackson (~0.92 confidence) and mother Maye Jackson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Mort Jackson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Montgomery Jackson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mary Jackson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Maye Jackson
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Jackson
Son · 1940 · age 26 · b. ~1914 · Alabama
★ You are viewing this record
Sibling
Donald Jackson
Sibling · 1940 · age 15
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 — Jefferson-County, Alabama
Open full size
1940 US Federal Census — Jefferson-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00091-00471)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emma Watson | 59 | Sister | Housewife | Alabama |
| 42 | Joseph L. Robinson | 47 | Head | Display Man | Alabama |
| 43 | Margie D. Robinson | 49 | Wife | — | Alabama |
| 44 | Joseph L. Jr. Robinson | 19 | Son | — | Oklahoma |
| 45 | James A. Holcomb | 49 | Head | Manager | Alabama |
| 46 | Ethel S. Holcomb | 44 | Wife | — | Alabama |
| 47 | Mary Elizabeth Holcomb | 20 | Daughter | — | Alabama |
| 48 | Marjorie Holcomb | 18 | Daughter | — | Alabama |
| 49 | Mrs. Elizabeth Johnson | 72 | Mother-in-law | — | England |
| 50 | John M. Kile | 38 | Head | Agency Manager | Kansas |
| 51 | Nell V. Kile | 36 | Wife | — | Mississippi |
| 52 | Betty Jean Kile | 15 | Daughter | — | Florida |
| 53 | John M. Jr. Kile | 9 | Son | — | Texas |
| 54 | Balden H. Eiland | 60 | Head | Sergeant | Alabama |
| 55 | Mary L. Eiland | 47 | Wife | — | South Carolina |
| 56 | Balden H. Jr. Eiland | 21 | Son | — | Alabama |
| 57 | J. T. Griffin | 26 | Lodger | Mail Carrier | Georgia |
| 58 | Emory C. Slatin | 48 | Lodger | Motorman | South Carolina |
| 59 | Sidney A. Johnson | 32 | Head | Salesman | Alabama |
| 60 | Hazel Johnson | 31 | Wife | — | Alabama |
| 61 | Sylvia Johnson | 6 | Daughter | — | Alabama |
| 62 | Velma Shaw | 28 | Lodger | Operator | Alabama |
| 63 | Lyman B. Whitlow | 35 | Head | Steam Engineer | Georgia |
| 64 | Leila L. Whitlow | 34 | Wife | — | Alabama |
| 65 | Robert C. Prince | 25 | Lodger | Steel Inspector | South Carolina |
| 66 | Dorothy Prince | 24 | Lodger | Stenographer | Alabama |
| 67 | Mort D. Jackson | 57 | Head | Agent | Alabama |
| 68 | Maye Jackson | 45 | Wife | — | Alabama |
| 69 | Robert A. Jackson THIS PERSON | 26 | Son | Clerk | Alabama |
| 70 | Donald M. Jackson | 15 | Son | — | Alabama |
| 71 | Hubert A. Snow | 34 | Head | Locomotive Engineer | Alabama |
| 72 | Estine Snow | 33 | Wife | — | Alabama |
| 73 | Hubert Jr. Snow | 15 | Son | — | Alabama |
| 74 | Mary Alice Snow | 7 | Daughter | — | Alabama |
| 75 | Eula S. Fulmer | 49 | Sister | Cashier | Alabama |
| 76 | Mrs. Mary Smith | 48 | Head | — | Alabama |
| 77 | Lara Nye Smith | 22 | Daughter | Reporter | Alabama |
| 78 | Elizabeth Smith | 20 | Daughter | Office Clerk | Alabama |
| 79 | Joseph A. Campisi | 25 | Lodger | Salesman | Alabama |
| 80 | Grace Campisi | 24 | Daughter | — | Alabama |
Pedigree Summary
Robert + 1 sibling
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)