MJ
Mamie Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegany-County, Maryland
Our Model Tree links this Mamie Johnson across the 1930 and 1940 US Censuses in Allegany-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1892), then head of a 9-person household.
Age 48
b. ~1892
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegany-County, Maryland |
| Surname | Johnson |
| Given Name | Mamie A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Cumberland |
| 1935 Residence (County) | Allegany |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election District 5 |
| Est. Birth Year | ~1892 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mamie | Age | Birth yr |
|---|---|---|---|---|
| Mary Johnson | Daughter | — | 14 | ~1926 |
| Marie Johnson | Daughter | — | 12 | ~1928 |
| Charles Johnson | Head | — | 50 | ~1890 |
| Thomas Johnson | Son | — | 16 | ~1924 |
| Claude Johnson | Son | — | 6 | ~1934 |
| Donald Johnson | Son | — | 3 | ~1937 |
| Danny Johnson | Son | — | 10 | ~1930 |
| Albert Johnson | Son | — | 22 | ~1918 |
| Mamie Johnson | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Allegany, Maryland
Other, age 38
Allegany, Maryland · implied b. ~1892 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Mamie A |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 17 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Allegany-County, Maryland
Spouse, age 48
Allegany-County, Maryland · implied b. ~1892 — 9 household members
| Surname | Johnson |
| Given Name | Mamie A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Cumberland |
| 1935 Residence (County) | Allegany |
| Highest Grade | No 8 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Mamie Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mamie Johnson
Spouse · 1940 · age 48 · b. ~1892 · Maryland
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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 — Allegany-County, Maryland
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1940 US Federal Census — Allegany-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01499-00414)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bernard Weimer | 10 | Son | — | Maryland |
| 42 | Shirley Weimer | 8 | Daughter | — | Maryland |
| 43 | Franklin Weimer | 7 | Son | — | Maryland |
| 44 | Ernest Weimer | 6 | Son | — | Maryland |
| 45 | Addison Robinette | 84 | Head | — | Maryland |
| 46 | John J Bailey | 36 | Head | Road Laborer | West Virginia |
| 47 | Ada A Bailey | 33 | Wife | — | Pennsylvania |
| 48 | Harry P Lynch | 26 | Head | Textiler | West Virginia |
| 49 | Mildred A Lynch | 21 | Wife | Textiler | West Virginia |
| 50 | Francis J Klosterman | 28 | Head | Bridge Worker | Maryland |
| 51 | Frances Klosterman | 26 | Wife | — | Michigan |
| 52 | Donald Klosterman | 4 | Son | — | Maryland |
| 53 | Clayton A Lee | 72 | Head | — | Pennsylvania |
| 54 | Elwin C Kubes | 22 | Head | Textiler | West Virginia |
| 55 | Hope Kubes | 19 | Wife | — | West Virginia |
| 56 | Charles E Johnson | 50 | Head | Shoemaker | Maryland |
| 57 | Mamie A Johnson THIS PERSON | 48 | Wife | — | Maryland |
| 58 | Albert Johnson | 22 | Son | Road Laborer | West Virginia |
| 59 | Thomas Johnson | 16 | Son | New Worker | West Virginia |
| 60 | Mary Johnson | 14 | Daughter | — | Maryland |
| 61 | Marie Johnson | 12 | Daughter | — | Maryland |
| 62 | Danny Johnson | 10 | Son | — | Maryland |
| 63 | Claude Johnson | 6 | Son | — | Maryland |
| 64 | Donald Johnson | 3 | Son | — | Maryland |
| 65 | Elmer S Grove | 41 | Head | Trucker | Maryland |
| 66 | Adeline Grove | 40 | Wife | — | Maryland |
| 67 | Thelma Grove | 12 | Daughter | — | Pennsylvania |
| 68 | Leroy Grove | 10 | Son | — | Maryland |
| 69 | Elsie J Grove | 8 | Daughter | — | Maryland |
| 70 | Billy N Grove | 5 | Son | — | Maryland |
| 71 | Van Elmo Grove | 4 | Son | — | Maryland |
| 72 | Franklin D Grove | 3 | Son | — | Maryland |
| 73 | Charles Lee Day | 40 | Head | Electrician Helper | Maryland |
| 74 | Susan A Day | 33 | Wife | — | Maryland |
| 75 | Odis Miller | 36 | Head | Road Laborer | Virginia |
| 76 | Anna A Miller | 35 | Wife | — | Maryland |
| 77 | Charles Miller | 16 | Son | New Worker | Maryland |
| 78 | Albert Miller | 14 | Son | — | Maryland |
| 79 | Orlin J Miller | 7 | Son | — | Maryland |
| 80 | Betty Miller | 5 | Daughter | — | Maryland |
Related Census Records
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)