FM
Frank Mason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Macon-County, Illinois
Our Model Tree links this Frank Mason across the 1920, 1930 and 1940 US Censuses in Macon-County, Illinois (XGBoost, ~Confirmed), with identified parents Victor & Victor — first a son (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Macon-County, Illinois |
| Surname | Mason |
| Given Name | Frank V. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Additional Details | |
| Occupation | Proprietor |
| Industry | Driver own truck |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Proprietor |
| Township / Ward | Decatur |
| Est. Birth Year | ~1919 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Victor Mason | Head | — | 44 | ~1896 |
| Eugene Mason | Son | — | 4 | ~1936 |
| Alice Mason | Other | — | 68 | ~1872 |
| Fred Elm | Other | — | 58 | ~1882 |
| Dorothy Mason | Daughter | — | 7 | ~1933 |
| Miner Elm | Other | — | 29 | ~1911 |
| Marie Mason | Spouse | — | 41 | ~1899 |
| Frank Mason | Son | — | 21 | ~1919 |
Census Appearances
1920
Macon, Illinois
Son, age
Macon, Illinois · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Frank V |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Westphalia |
| Mother Tongue | German |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Macon, Illinois
Son, age 10
Macon, Illinois · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Frank V. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Macon-County, Illinois
Son, age 21
Macon-County, Illinois · implied b. ~1919 — 8 household members
| Surname | Mason |
| Given Name | Frank V. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Occupation | Proprietor |
| Industry | Driver own truck |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Frank Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Victor Mason (~0.92 confidence) and father Victor Mason (~0.92 confidence) and father Victor Mason (~0.92 confidence) and mother Marie Mason (~0.92 confidence) and mother Marie Mason (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Victor Mason
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Victor Mason
b. ~1895
Source father
● Household
· direct · ~0.92
Father
Victor Mason
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Marie Mason
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Marie Mason
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frank Mason
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Dorothy Mason
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Mason
Sibling · 1940 · age 4
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 — Macon-County, Illinois
Open full size
1940 US Federal Census — Macon-County, Illinois
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-00845-00085)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ida M Ahrens | 53 | Wife | — | Illinois |
| 42 | Lawrence Ahrens | 27 | Son | Salesman | Illinois |
| 43 | Lynn (Abs) Ahrens | 21 | Son | Salesman | Illinois |
| 44 | Marjorie (Abs) Ahrens | 19 | Daughter | — | Illinois |
| 45 | Joe H. Ahrens | 16 | Son | — | Illinois |
| 47 | Raymond Tennyson | 57 | Head | Carpenter | Illinois |
| 48 | Edna Tennyson | 50 | Wife | — | Illinois |
| 49 | Charles Tennyson | 30 | Son | Cook | Illinois |
| 50 | Emogene Tennyson | 15 | Daughter | — | Illinois |
| 51 | Lee O'Neil | 33 | Head | Chief Dutchman | Illinois |
| 52 | Geraldine O'Neil | 29 | Wife | — | Iowa |
| 53 | Richard O'Neil | 11 | Son | — | Illinois |
| 54 | Geraldine G. O'Neil | 3 | Daughter | — | Illinois |
| 55 | Robert Meeker | 15 | Nephew | — | Illinois |
| 56 | Victor L. Mason | 44 | Head | Moulder | Illinois |
| 57 | Marie Mason | 41 | Wife | — | Germany |
| 58 | Frank V. Mason THIS PERSON | 21 | Son | Proprietor | Illinois |
| 59 | Dorothy Mason | 7 | Daughter | — | Illinois |
| 60 | Eugene Mason | 4 | Son | — | Illinois |
| 61 | Alice Mason | 68 | Mother | — | Illinois |
| 62 | Fred Elm | 58 | Brother | Moulder | Illinois |
| 63 | Miner Elm | 29 | Brother | Miner | Illinois |
| 64 | William J. Newall | 28 | Head | Boiler Maker | Illinois |
| 65 | Ellen M. Newall | 29 | Wife | Supervisor | Illinois |
| 67 | Truman Williams | 53 | Head | Brick-Mason | Illinois |
| 68 | Goldie Williams | 54 | Wife | Seamstress | Illinois |
| 70 | Le Roy Curry | 54 | Head | Night-Watchman | Illinois |
| 71 | Mabel Curry | 49 | Wife | Laundress | Illinois |
| 72 | Melvin Lynn Curry | 17 | Son | New Worker | Illinois |
| 73 | Melvin Gene Curry | 11 | Son | Clerk | Illinois |
| 75 | John Luzinger | 25 | Head | Laborer | Illinois |
| 76 | Evelyn Luzinger | 23 | Wife | — | Illinois |
| 77 | John L. Duncan | 51 | Head | Stone-Mason | Pennsylvania |
| 78 | Bertha E. Duncan | 43 | Wife | — | Illinois |
| 79 | Paul Duncan | 16 | Son | General Work | Illinois |
| 80 | Claude Alberty | 63 | Head | Laborer | Illinois |
Pedigree Summary
Frank + 2 siblings
Gen 1 · 5 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)