RM
Richard Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Richard Mason across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 6-person household.
Age 19
b. ~1921
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mason |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Assembler |
| Industry | Auto Spring Factory |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 340 |
| Highest Grade | S 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Assembler |
| Township / Ward | Chicago |
| Est. Birth Year | ~1921 |
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 Richard | Age | Birth yr |
|---|---|---|---|---|
| Edward Mason | Son | — | 13 | ~1927 |
| Rena Mason | Daughter | — | 23 | ~1917 |
| Dana Mason | Daughter | — | 21 | ~1919 |
| Minnie Mason | Spouse | — | 38 | ~1902 |
| Daisy Mason | Daughter | — | 17 | ~1923 |
| Richard Mason | Son | — | 19 | ~1921 |
Census Appearances
1930
Cook, Illinois
Son, age 9
Cook, Illinois · implied b. ~1921 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 19
Cook-County, Illinois · implied b. ~1921 — 6 household members
| Surname | Mason |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Assembler |
| Industry | Auto Spring Factory |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 340 |
| Highest Grade | S 8 |
| 1935 Residence | Same Place |
| 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 Richard Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Richard Mason
Son · 1940 · age 19 · b. ~1921 · Illinois
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Sibling
Dana Mason
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mason
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daisy Mason
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rena Mason
Sibling · 1940 · age 23
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00948-01030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Minnie Mason | 38 | Wife | — | Illinois |
| 42 | Rena Mason | 23 | Daughter | Machine Operator | Illinois |
| 43 | Dana Mason | 21 | Daughter | Machine Operator | Illinois |
| 44 | Richard Mason THIS PERSON | 19 | Son | Assembler | Illinois |
| 45 | Daisy Mason | 17 | Daughter | — | Illinois |
| 46 | Edward Mason | 13 | Son | — | Illinois |
| 47 | Vincent Salomon | 28 | Head | Engineer | England |
| 48 | Madeline Salomon | 30 | Wife | — | New Jersey |
| 49 | Margaret Salomon | 3 | Daughter | — | Illinois |
| 50 | Frank Sneyd | 54 | Head | Store Room Clerk | Illinois |
| 51 | Maud Sneyd | 49 | Wife | — | Ohio |
| 52 | Rene Hunt | 55 | Head | Carpenter | Germany |
| 53 | Imogene Hunt | 39 | Wife | — | Illinois |
| 54 | Damian Coturne | 47 | Head | Laborer | Italy |
| 55 | Mary Coturne | 47 | Wife | — | Italy |
| 56 | Angeline Coturne | 19 | Daughter | Machine Operator | Illinois |
| 57 | Michael Coturne | 17 | Son | — | Illinois |
| 58 | Lottie Coturne | 12 | Daughter | — | Illinois |
| 59 | Lena Coturne | 9 | Daughter | — | Illinois |
| 60 | Josephine Coturne | 75 | Mother | — | Italy |
| 61 | Charles Luzza | 24 | Head | Assembler | Illinois |
| 62 | Leonarda Luzza | 21 | Wife | Coiler | Illinois |
| 63 | Harold Benson | 38 | Head | Gas Operator | England |
| 64 | Amanda Benson | 31 | Wife | — | Illinois |
| 65 | Judith Benson | 1 | Daughter | — | Illinois |
| 66 | Hayward Penrod | 34 | Head | Inspector | Illinois |
| 67 | Violet Penrod | 31 | Wife | — | Missouri |
| 68 | Eileen Penrod | 18 | Daughter | — | Illinois |
| 69 | Mary Ann Penrod | 6 | Daughter | — | Illinois |
| 70 | Henry Strahan | 32 | Head | Shipping Clerk | Missouri |
| 71 | Irene Strahan | 27 | Wife | — | Indiana |
| 72 | Richard Strahan | 2 | Son | — | Illinois |
| 73 | Harry Richards | 38 | Head | Salesman | Illinois |
| 74 | Edith Richards | 33 | Wife | — | Illinois |
| 75 | Mary Richards | 14 | Daughter | — | Illinois |
| 76 | Nicholas Hominink | 61 | Head | Shoe Maker | Poland |
| 77 | Rose Hominink | 51 | Wife | — | Poland |
| 78 | Joseph Hominink | 27 | Son | Clerk Office | Illinois |
| 79 | Stephenie Hominink | 23 | Daughter | Machine Binding Operator | Illinois |
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)