RM
Robert Mason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pike-County, Indiana
Our Model Tree links this Robert Mason across the 1920, 1930 and 1940 US Censuses in Pike-County, Indiana (XGBoost, ~Confirmed), with identified parents Lon & Orell — first a head (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Pike-County, Indiana |
| Surname | Mason |
| Given Name | Robert L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Pike |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laborer |
| Township / Ward | Monroe Township |
| Est. Birth Year | ~1913 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Beverly Mason | Daughter | — | 2 | ~1938 |
| Nora Mason | Daughter | — | 5 | ~1935 |
| Robert Mason | Head | — | 27 | ~1913 |
| James Mason | Son | — | 4 | ~1936 |
| Gladys Mason | Spouse | — | 23 | ~1917 |
Census Appearances
1920
Pike, Indiana
Son, age 5
Pike, Indiana · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Pike, Indiana
Son, age 16
Pike, Indiana · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Robert E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Pike-County, Indiana
Head, age 27
Pike-County, Indiana · implied b. ~1913 — 5 household members
| Surname | Mason |
| Given Name | Robert L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Pike |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lon Mason (~0.92 confidence) and father Orell Mason (~0.92 confidence) and mother Alta Mason (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lon Mason
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Orell Mason
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Alta Mason
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Mason
Head · 1940 · age 27 · b. ~1913 · Indiana
★ 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 — Pike-County, Indiana
Open full size
1940 US Federal Census — Pike-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01085-00200)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Paul Owens | 17 | son | — | Indiana |
| 42 | Billy A. Owens | 16 | son | — | Indiana |
| 43 | Lawrence Owens | 14 | son | — | Indiana |
| 44 | Ray Owens | 13 | son | — | Indiana |
| 45 | Welzie J. Owens | 9 | son | — | Indiana |
| 46 | Gene Owens | 1 | son | — | Indiana |
| 47 | Burl Riddle | 38 | Head | Laborer | Indiana |
| 48 | Florence Riddle | 57 | mother | — | Indiana |
| 49 | Ethel Riddle | 41 | sister | — | Indiana |
| 50 | Aaron J. Thurman | 39 | Head | Laborer | Tennessee |
| 51 | Helen L. Thurman | 28 | wife | — | Indiana |
| 52 | Conrad C. Thurman | 5 | son | — | Indiana |
| 53 | John R. Thurman | 3 | son | — | Indiana |
| 54 | Cecil E. Thurman | 2 | son | — | Indiana |
| 55 | August Gieselman | 40 | Head | Laborer | Indiana |
| 56 | Aileen Gieselman | 34 | wife | — | Indiana |
| 57 | Evelyn Gieselman | 8 | daughter | — | Indiana |
| 58 | Billy Joe Gieselman | 6 | son | — | Indiana |
| 59 | George Mcmurtry | 69 | Head | Laborer | Indiana |
| 60 | Fannie Mcmurtry | 63 | wife | — | Indiana |
| 61 | Robert L. Mason THIS PERSON | 27 | Head | Laborer | Indiana |
| 62 | Gladys M. Mason | 23 | wife | — | Indiana |
| 63 | Nora G. Mason | 5 | daughter | — | Indiana |
| 64 | James J. Mason | 4 | son | — | Indiana |
| 65 | Beverly J. Mason | 2 | daughter | — | Indiana |
| 66 | James F. Mason | 40 | Head | — | Indiana |
| 67 | Ethel Mason | 42 | wife | — | Indiana |
| 68 | Fay L. Mason | 12 | daughter | — | Indiana |
| 69 | Rosalee Mason | 10 | daughter | — | Indiana |
| 70 | Amil Mason | 10 | son | — | Indiana |
| 71 | Betty Lou Mason | 8 | daughter | — | Indiana |
| 72 | Robert E. Mason | 3 | son | — | Indiana |
| 73 | Edgar Hudson | 58 | Head | — | Indiana |
| 74 | Artha Hudson | 59 | wife | — | Indiana |
| 75 | Hoyt Heacock | 32 | Head | Laborer | Indiana |
| 76 | Alma Heacock | 28 | wife | — | Indiana |
| 77 | Betty Jo Heacock | 11 | daughter | — | Indiana |
| 78 | Geraldine Heacock | 9 | son | — | Indiana |
| 79 | Russell Lee Heacock | 7 | son | — | Indiana |
| 80 | Bobby Gene Heacock | 5 | son | — | Indiana |
Pedigree Summary
Robert
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)