RH
Robert Harper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lamar-County, Alabama
Our Model Tree links this Robert Harper across the 1920, 1930 and 1940 US Censuses in Lamar-County, Alabama (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1920), then head of a 3-person household.
Age 20
b. ~1920
Male
Head
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lamar-County, Alabama |
| Surname | Harper |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Election Precinct 6, Henson Springs |
| 1935 Residence (County) | Lamar |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 200 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Farmer |
| Township / Ward | Election Precinct 6 Henson Springs |
| Est. Birth Year | ~1920 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Harper | Head | — | 20 | ~1920 |
| Jewell Harper | Spouse | — | 18 | ~1922 |
| Gaylon Harper | Son | — | ~1940 |
Census Appearances
1920
Lamar, Alabama
Son, age
Lamar, Alabama · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Lamar, Alabama
Son, age 10
Lamar, Alabama · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Robert W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Laborer |
| Industry | General farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Lamar-County, Alabama
Head, age 20
Lamar-County, Alabama · implied b. ~1920 — 3 household members
| Surname | Harper |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Election Precinct 6, Henson Springs |
| 1935 Residence (County) | Lamar |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 200 |
| Highest Grade | No 8 |
| 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 Harper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Harper (~0.92 confidence) and father John Harper (~0.92 confidence) and father John Harper (~0.81 confidence) and mother Mary Harper (~0.81 confidence) and mother Ellie Harper (~0.92 confidence). The pedigree spans 2 generations with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Father
John Harper
b. ~1893
Source father
● Household
· direct · ~0.92
Father
John Harper
b. ~1903
Source father
● Household
· direct · ~0.92
Father
John Harper
b. ~1869
Source father>father
● Household
· direct · ~0.81
Mother
Mary Harper
b. ~1873
Source father>mother
● Household
· direct · ~0.81
Mother
Ellie Harper
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Harper
Head · 1940 · age 20 · b. ~1920 · Alabama
★ 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 — Lamar-County, Alabama
Open full size
1940 US Federal Census — Lamar-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00048-00182)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ollie | 15 | Son | — | Alabama |
| 2 | Ray | 12 | Son | — | Alabama |
| 3 | Burleen | 10 | Daughter | — | Alabama |
| 4 | Geraldine | 8 | Daughter | — | Alabama |
| 5 | Leland | 3 | Son | — | Alabama |
| 6 | Fred D. Harper | 18 | Head | Farmer | Alabama |
| 7 | Pearl Harper | 16 | Wife | — | Alabama |
| 8 | John H. Harper | 47 | Head | Farmer | Alabama |
| 9 | Essie Harper | 50 | Wife | — | Alabama |
| 10 | Milton Harper | 27 | Son | Farmer | Alabama |
| 11 | Glenn Harper | 7 | Son | — | Alabama |
| 12 | Brook Adkinson | 19 | Head | Farmer | Alabama |
| 13 | Minnie Adkinson | 19 | Wife | — | Alabama |
| 14 | Virginia Adkinson | 0 | Daughter | — | Alabama |
| 15 | Daniel D. Fry | 45 | Head | Farmer | Alabama |
| 16 | Icie Fry | 43 | Wife | — | Alabama |
| 17 | Birdie Fry | 13 | Son | — | Alabama |
| 18 | Rolly Fry | 7 | Son | — | Alabama |
| 19 | B. D. Fry | 20 | Head | Farmer | Alabama |
| 20 | Willie Fry | 19 | Wife | — | Alabama |
| 21 | Halon Duncan | 42 | Head | Farmer | Alabama |
| 22 | Myrtle Duncan | 38 | Wife | — | Alabama |
| 23 | Quinton Duncan | 17 | Son | Farmer | Alabama |
| 24 | Inez Duncan | 13 | Daughter | — | Alabama |
| 25 | Elaine Duncan | 8 | Daughter | — | Alabama |
| 26 | Mary Joe Duncan | 2 | Daughter | — | Alabama |
| 27 | Martha J. Duncan | 2 | Daughter | — | Alabama |
| 28 | Franks Gonie | 61 | Mother-in-law | — | Alabama |
| 29 | Kertis Asburn | 24 | Head | Farmer | Alabama |
| 30 | Gladys Asburn | 17 | Wife | Farmer | Alabama |
| 31 | Lowell Dill | 24 | Head | Farmer | Alabama |
| 32 | Ruby Dill | 20 | Wife | — | Alabama |
| 33 | Jones Cantrell | 65 | Head | Farmer | Alabama |
| 34 | Verla Cantrell | 24 | Daughter | — | Alabama |
| 35 | Curtis Cantrell | 17 | Son | Laborer | Alabama |
| 36 | Robert Harper THIS PERSON | 20 | Head | Farmer | Alabama |
| 37 | Jewell Harper | 18 | Wife | — | Alabama |
| 38 | Gaylon Harper | 0 | Son | — | Alabama |
| 39 | Joe Cantrell | 30 | Head | Farmer | Alabama |
| 40 | Flora Cantrell | 23 | Wife | — | Mississippi |
Pedigree Summary
Robert
Gen 1 · 3 parents
~0.92
Gen 2 · 2 grandparents
~0.81
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)