MJ
Mary Johnston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Oakland-County, Michigan
Our Model Tree links this Mary Johnston across the 1920, 1930 and 1940 US Censuses in Oakland-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 2-person household.
Age 72
b. ~1868
Female
Head
Born: England
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Oakland-County, Michigan |
| Surname | Johnston |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Franklin Village |
| 1935 Residence (County) | Oakland |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Franklin Village |
| Est. Birth Year | ~1868 |
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 Johnston | Head | — | 72 | ~1868 |
| John Johnston | Son | — | 37 | ~1903 |
Census Appearances
1920
Oakland, Michigan
Head, age 57
Oakland, Michigan · implied b. ~1863 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | England |
| Year of Immigration | 1879 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | England |
| Birthplace (normalized) | england |
1930
Oakland, Michigan
Other, age 67
Oakland, Michigan · implied b. ~1863 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Mary |
| Relationship to Head | Mother-H |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1872 |
| Age at First Marriage | 22 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Oakland-County, Michigan
Head, age 72
Oakland-County, Michigan · implied b. ~1868 — 2 household members
| Surname | Johnston |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Franklin Village |
| 1935 Residence (County) | Oakland |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Johnston 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 Johnston
Head · 1940 · age 72 · b. ~1868 · Michigan
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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 — Oakland-County, Michigan
Open full size
1940 US Federal Census — Oakland-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01803-00753)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Karl W Miller | 45 | Head | Writer | Michigan |
| 2 | Edna A Miller | 50 | Wife | — | Michigan |
| 3 | George H Lee | 67 | Head | Laborer | Michigan |
| 4 | Tella M Lee | 46 | Wife | — | Michigan |
| 5 | Cyrus Lee | 64 | Brother | — | Michigan |
| 6 | Frank Toag | 13 | Son | — | Michigan |
| 7 | Catherine Klefne | 85 | Head | — | Michigan |
| 8 | Oliver Klefne | 46 | Son | Handy Man | Michigan |
| 9 | I M Jones | 35 | Head | Salesman | Ohio |
| 10 | Agatha Jones | 29 | Wife | — | Michigan |
| 11 | Sharon Jones | 5 | Daughter | — | Michigan |
| 12 | Fred A Hewlett | 44 | Head | Maintenance Man | Colorado |
| 13 | Melva W Hewlett | 48 | Wife | — | Ohio |
| 14 | Dixon Hewlett | 12 | Son | — | Michigan |
| 15 | Joann Hewlett | 9 | Daughter | — | Michigan |
| 16 | Paul R Schafer | 35 | Head | Designer | Indiana |
| 17 | Virginia V Schafer | 34 | Wife | — | Michigan |
| 18 | Joan R Schafer | 7 | Daughter | — | Michigan |
| 19 | Mary Johnston THIS PERSON | 72 | Head | — | England |
| 20 | John W Johnston | 37 | Son | Carpenter | Michigan |
| 21 | Sallie M Diering | 77 | Head | — | Michigan |
| 22 | Howell G Alvin | 34 | Head | Clerk | Alabama |
| 23 | Sarah Alvin | 34 | Wife | — | Alabama |
| 24 | Martha Alvin | 10 | Daughter | — | Michigan |
| 25 | James Alvin | 5 | Son | — | Michigan |
| 26 | Nancy Alvin | 0 | Daughter | — | Michigan |
| 27 | Sexta D Mead | 43 | Head | House Painter | Michigan |
| 28 | Mildred B Mead | 41 | Wife | Clerk | Illinois |
| 29 | Richard B Mead | 13 | Son | — | Illinois |
| 30 | F Lyle Baldwin | 46 | Head | Executive | Missouri |
| 31 | Anita C Baldwin | 41 | Wife | — | New York |
| 32 | Donna Baldwin | 18 | Daughter | — | New York |
| 33 | Robert Baldwin | 11 | Son | — | New York |
| 34 | Hally Miller | 47 | A man | House Man | Mississippi |
| 35 | Richard Ullraum | 33 | Head | Machinist | Michigan |
| 36 | Mirinda Ullraum | 25 | Wife | — | Michigan |
| 37 | Able Ullraum | 56 | Father | Machinist | Michigan |
| 38 | Grace Ullraum | 51 | Mother | — | Michigan |
| 39 | Oliver Harn | 38 | Head | Executive | Missouri |
| 40 | Francis Harn | 38 | Wife | — | Missouri |
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)