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Harry Mason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Oregon
Our Model Tree links this Harry Mason across the 1920, 1930 and 1940 US Censuses in Marion-County, Oregon (XGBoost, ~Confirmed), with identified parents Aaron & Alanson — first a son (b.~1920), then head of a 4-person household.
Age 20
b. ~1920
Male
Son
Born: Oregon
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Oregon |
| Surname | Mason |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | Salem City |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Hours Worked | 48 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Township / Ward | Salem City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Clinton Mason | Son | — | 12 | ~1928 |
| Dorothy Mason | Daughter | — | 17 | ~1923 |
| Gladys Mason | Head | — | 39 | ~1901 |
| Harry Mason | Son | — | 20 | ~1920 |
Census Appearances
1920
Marion, Oregon
Son, age
Marion, Oregon · implied b. ~1920 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Harry L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Wisconsin |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1930
Marion, Oregon
Son, age 10
Marion, Oregon · implied b. ~1920 — 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 | 10 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Marion-County, Oregon
Son, age 20
Marion-County, Oregon · implied b. ~1920 — 4 household members
| Surname | Mason |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | Salem City |
| 1935 Residence (County) | Marion |
| Hours Worked | 48 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Aaron Mason (~0.92 confidence) and father Alanson Mason (~0.92 confidence) and mother Gladys Mason (~0.60 confidence) and mother Gladys Mason (~0.92 confidence) and mother Gladys Mason (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.86
Father
Aaron Mason
b. ~1898
Source father
● Household
· direct · ~0.92
Father
Alanson Mason
b. ~1898
Source father
● Household
· direct · ~0.92
Mother
Gladys Mason
b. ~1909
Source mother
● Household
· direct · ~0.6
Mother
Gladys Mason
b. ~1901
Source mother
● Household
· direct · ~0.92
Mother
Gladys Mason
b. ~1901
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Mason
Son · 1940 · age 20 · b. ~1920 · Oregon
★ You are viewing this record
Sibling
Dorothy Mason
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clinton Mason
Sibling · 1940 · age 12
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 — Marion-County, Oregon
Open full size
1940 US Federal Census — Marion-County, Oregon
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03374-00749)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edgar M. Sanders | 69 | Head | Carpenter | Illinois |
| 42 | Ralfa A. Sanders | 60 | Wife | — | Illinois |
| 43 | William R. Kaufman | 31 | Head | Salesman | Nebraska |
| 44 | Zada L. Kaufman | 24 | Wife | Saleslady | Nebraska |
| 45 | Fred Kaufman | 65 | Father | — | Germany |
| 46 | Donald Kaufman | 19 | Brother | Baker | Nebraska |
| 47 | James O. Beaver | 27 | Head | Salesman | Washington |
| 48 | Mary L. Beaver | 27 | Wife | — | Ohio |
| 49 | Theresa A. Beaver | 5 | Daughter | — | Oregon |
| 51 | Emily M. Meyers | 72 | Head | — | Germany |
| 52 | Wade E. Weeks | 27 | Head | Fuller | Missouri |
| 53 | Ada L. Weeks | 26 | Wife | — | Missouri |
| 54 | Extra Liane Weeks | 1 | Daughter | — | Oregon |
| 55 | Lydia Andross | 72 | Head | — | Oregon |
| 56 | Claude D. Mix | 38 | Head | Jeweler | Michigan |
| 57 | Edith B. Mix | 36 | Wife | — | Kansas |
| 58 | David E. Mix | 5 | Son | — | Oregon |
| 59 | Kathleen D. Mix | 1 | Daughter | — | Oregon |
| 60 | Jens J. Wells | 37 | Head | Auto Mechanic | Minnesota |
| 61 | Renita E. Wells | 32 | Wife | — | Minnesota |
| 62 | Delores L. Wells | 11 | Daughter | — | Oregon |
| 63 | Donald Z. Wells | 7 | Son | — | Oregon |
| 64 | Leroy W. Wells | 2 | Son | — | Oregon |
| 65 | Marguerite Devore | 58 | Head | — | Switzerland |
| 66 | Esther M. Devore | 19 | Daughter | — | Oregon |
| 67 | Edward J. Burnside | 32 | Head | Salesman | Iowa |
| 68 | Frieda Burnside | 29 | Wife | — | Oregon |
| 69 | Betty A. Burnside | 2 | Daughter | — | Oregon |
| 70 | Robert E. Burnside | 0 | Son | — | Oregon |
| 71 | Herman A. Clark | 52 | Head | Science Teacher | Oregon |
| 72 | Gertrude Clark | 55 | Wife | — | Ohio |
| 73 | Corliss Clark | 21 | Daughter | — | Oregon |
| 74 | Carol Clark | 18 | Daughter | File Clerk | Oregon |
| 75 | Gladys Mason | 39 | Head | Bookkeeper | Wisconsin |
| 76 | Harry Mason THIS PERSON | 20 | Son | — | Oregon |
| 77 | Dorothy Mason | 17 | Daughter | — | Oregon |
| 78 | Clinton Mason | 12 | Son | — | Oregon |
| 79 | George L. Oro | 47 | Head | Plaster And Cement Finisher | Iowa |
| 80 | Sadie V. Oro | 50 | Wife | — | Oregon |
Pedigree Summary
Harry + 2 siblings
Gen 1 · 5 parents
~0.86
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)