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Harry Mason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Fulton-County, Illinois
Our Model Tree links this Harry Mason across the 1910, 1920, 1930 and 1940 US Censuses in Fulton-County, Illinois (XGBoost, ~Confirmed), with identified parents Clarence & Jessie — first a head (b.~1910), then head of a 6-person household.
Age 30
b. ~1910
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Fulton-County, Illinois |
| Surname | Mason |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Fulton |
| Additional Details | |
| Occupation | Farm Work |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 1 |
| Income (1939) | 600 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farm Work |
| Township / Ward | Cuba City |
| Est. Birth Year | ~1910 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| James Mason | Son | — | 5 | ~1935 |
| Harry Mason | Head | — | 30 | ~1910 |
| Arlen Mason | Son | — | ~1940 | |
| David Mason | Son | — | 3 | ~1937 |
| Pauline Baldwin | Other | — | 17 | ~1923 |
| Eva Mason | Spouse | — | 29 | ~1911 |
Census Appearances
1910
Fulton, Illinois
Son, age 1
Fulton, Illinois · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Fulton, Illinois
Son, age 10
Fulton, Illinois · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Harry |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Fulton, Illinois
Son, age 20
Fulton, Illinois · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Harry A |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Occupation | Lineman |
| Industry | Telephone Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Fulton-County, Illinois
Head, age 30
Fulton-County, Illinois · implied b. ~1910 — 6 household members
| Surname | Mason |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Fulton |
| Occupation | Farm Work |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 1 |
| Income (1939) | 600 |
| 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 Harry Mason across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clarence Mason (~0.92 confidence) and mother Jessie Mason (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clarence Mason
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Jessie Mason
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Mason
Head · 1940 · age 30 · b. ~1910 · Illinois
★ 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 — Fulton-County, Illinois
Open full size
1940 US Federal Census — Fulton-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00806-00475)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ethel Lundry | 51 | Head | — | Illinois |
| 42 | Lloyd Phillips | 40 | Head | — | Illinois |
| 43 | Jack Smart | 24 | Head | Laborer | Missouri |
| 44 | Francis Smart | 20 | Wife | — | Missouri |
| 45 | Jacqueline Ann Smart | 3 | Daughter | — | — |
| 46 | Warren Thompson | 29 | Head | Trucking | Missouri |
| 47 | Dorothy Thompson | 22 | Wife | — | Illinois |
| 48 | Willard Noe | 23 | Head | Librarian | Illinois |
| 49 | Lillian Noe | 21 | Wife | — | Illinois |
| 50 | Carol Ann Noe | 1 | Daughter | — | — |
| 51 | Caroline E. Baylor | 52 | Head | — | Illinois |
| 52 | George D. Baylor | 24 | Son | Farm Work | Illinois |
| 53 | Shirley Baylor | 16 | Son | — | Illinois |
| 54 | Harry Mason THIS PERSON | 30 | Head | Farm Work | Illinois |
| 55 | Eva Mason | 29 | Wife | — | Oklahoma |
| 56 | James Mason | 5 | Son | — | — |
| 57 | David Mason | 3 | Son | — | — |
| 58 | Arlen Mason | 0 | Son | — | — |
| 59 | Pauline Baldwin | 17 | Sister-in-law | — | Oklahoma |
| 60 | Carl Taylor | 22 | Head | Icehogging | Illinois |
| 61 | Rosalie Taylor | 26 | Wife | — | Illinois |
| 62 | Dean Bartlett | 6 | Step-son | — | — |
| 63 | James Irwin | 61 | Head | Concrete Worker | Illinois |
| 64 | Filiberto Magnolia | 63 | Head | 1 | — |
| 65 | Katerina Magnolia | 64 | Wife | — | — |
| 66 | Dena Thorndyke | 33 | Daughter | Waitress | Germany |
| 67 | Herbert Thorndyke | 36 | Son-in-law | Manager | Illinois |
| 68 | Pearl Kends | 61 | Head | Housework | Illinois |
| 69 | Ivan Wilton | 25 | Head | Trucking | Illinois |
| 70 | Beulah Wilton | 25 | Wife | — | Illinois |
| 71 | Ivan Jr. Wilton | 2 | Son | — | — |
| 72 | Garland Wilton | 0 | Son | — | — |
| 73 | Clarence Harn | 53 | Head | Laborer | Illinois |
| 74 | Susie Harn | 52 | Wife | — | Illinois |
| 75 | John A. Neff | 84 | Head | — | Illinois |
| 76 | Fred Newburn | 37 | Head | — | Wisconsin |
| 77 | Frank Taylor | 72 | Head | — | Illinois |
| 78 | Lillian Putman | 62 | Head | Housekeeper | Illinois |
| 79 | Marie Genesia | 70 | Head | — | — |
Pedigree Summary
Harry
Gen 1 · 2 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)