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Mary Mckenzie — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, Oregon
Our Model Tree links this Mary Mckenzie across the 1920, 1930 and 1940 US Censuses in Union-County, Oregon (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 2-person household.
Age 68
b. ~1872
Female
Head
Born: Scotland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, Oregon |
| Surname | McKenzie |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Summerville |
| 1935 Residence (County) | Union |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 50 |
| Income (1939) | 250 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Farmer |
| Township / Ward | Summerville |
| Est. Birth Year | ~1872 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mckenzie | Head | — | 68 | ~1872 |
| Alex Mckenzie | Son | — | 51 | ~1889 |
Census Appearances
1920
Union, Oregon
Head, age 52
Union, Oregon · implied b. ~1868 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKenzie |
| Given Name | Mary E |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Year of Immigration | 1871 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Scotland |
| Year of Naturalization | 1880 |
| Birthplace (normalized) | scotland |
1930
Union, Oregon
Head, age 63
Union, Oregon · implied b. ~1867 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKenzie |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Farmer |
| Industry | Grain Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Value / Rent | O |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Union-County, Oregon
Head, age 68
Union-County, Oregon · implied b. ~1872 — 2 household members
| Surname | McKenzie |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Summerville |
| 1935 Residence (County) | Union |
| Naturalization Status | Naturalized |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 50 |
| Income (1939) | 250 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Mary Mckenzie across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mckenzie
Head · 1940 · age 68 · b. ~1872 · Oregon
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Union-County, Oregon
Open full size
1940 US Federal Census — Union-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03381-00485)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roy L. Berry | 48 | Head | Foreman Carpenter | Washington |
| 42 | Violet B. Berry | 44 | Wife | — | Washington |
| 43 | Wayland L. Berry | 25 | Son | Farm Laborer | Washington |
| 44 | Delbert L. Berry | 18 | Son | Carpenter Helper | Washington |
| 45 | Gloria A. Berry | 2 | Daughter | — | Oregon |
| 46 | Mary A. Mckenzie THIS PERSON | 68 | Head | Farmer | Scotland |
| 47 | Alex R. Mckenzie | 51 | Son | Farmer | Oregon |
| 48 | Nellie Daniel | 40 | Head | — | Kansas |
| 49 | Dennison C. Daniel | 13 | Son | — | Kansas |
| 50 | Shannon D. Daniel | 9 | Son | — | Kansas |
| 51 | Gale C. Daniel | 7 | Son | — | Kansas |
| 52 | Shirley L. Daniel | 5 | Daughter | — | Kansas |
| 53 | Patrick K. Daniel | 2 | Son | — | Oregon |
| 54 | Millard Daniel | 81 | Father-in-law | — | Illinois |
| 55 | Aileen R. Williams | 22 | Step-daughter | — | Kansas |
| 56 | David C. Williams | 25 | Son-in-law | Farm Laborer | Nebraska |
| 57 | Janice I. Williams | 2 | Grand-daughter | — | Kansas |
| 58 | Larry C. Williams | 2 | Grand-son | — | Kansas |
| 59 | Joe S. Austin | 25 | Brother | Farm Laborer | Kansas |
| 60 | Euphemia Sanderson | 91 | Head | — | Canada-English |
| 61 | Francis B. Ott | 36 | Head | Filling Station Operator | Oregon |
| 62 | Mildred B. Ott | 30 | Wife | — | Oregon |
| 63 | Donald O. Ott | 11 | Son | — | Oregon |
| 64 | Gwendolyn F. Ott | 0 | Daughter | — | Oregon |
| 65 | Frederick A. Ott | 33 | Head | Laborer | Oregon |
| 66 | Laura Mae Ott | 25 | Wife | — | Oregon |
| 67 | Constance Mae Ott | 7 | Daughter | — | Oregon |
| 68 | Frederick A. Jr. Ott | 6 | Son | — | Oregon |
| 69 | Deanna S. Ott | 2 | Daughter | — | Oregon |
| 70 | Albert J. Quellman | 32 | Head | Farm Laborer | Indiana |
| 71 | Opal May Quellman | 31 | Wife | — | Indiana |
| 72 | Edna Fay Quellman | 9 | Daughter | — | Montana |
| 73 | Albert H. Quellman | 6 | Son | — | Montana |
| 74 | Oather B. Starns | 71 | Head | Farmer | Kansas |
| 75 | Myrtle Starns | 65 | Wife | — | Wisconsin |
| 76 | Hiram O. Starns | 45 | Son | Farmer | Oregon |
| 77 | Frank Ott | 77 | Head | — | Germany |
| 78 | Rex J. Ott | 28 | Son | Fireman Helper | Oregon |
| 79 | Clyde L. Ott | 24 | Son | Farmer | Oregon |
| 80 | Murdo I. Mcrae | 49 | Head | Caretaker | Oregon |
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)