MJ
Mollie Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mollie Johnson across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Johnson |
| Given Name | Mollie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Some house |
| 1935 Residence (County) | Some house |
| Additional Details | |
| Occupation | New Worker |
| Class of Worker | GW |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Some house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Pittsburgh |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mollie | Age | Birth yr |
|---|---|---|---|---|
| Alfred Johnson | Son | — | 17 | ~1923 |
| George Johnson | Son | — | 14 | ~1926 |
| Rhoda Johnson | Spouse | — | 52 | ~1888 |
| William Johnson | Head | — | 57 | ~1883 |
| Viola Johnson | Daughter | — | 20 | ~1920 |
| Helen Johnson | Daughter | — | 23 | ~1917 |
| Mollie Johnson | Daughter | — | 19 | ~1921 |
| Ralph Johnson | Son | — | 26 | ~1914 |
| Loretta Johnson | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 9
Allegheny, Pennsylvania · implied b. ~1921 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Mollie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Virginia |
| Mother's Birthplace | District of Columbia |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 19
Allegheny-County, Pennsylvania · implied b. ~1921 — 9 household members
| Surname | Johnson |
| Given Name | Mollie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Some house |
| 1935 Residence (County) | Some house |
| Occupation | New Worker |
| Class of Worker | GW |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Some house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Mollie Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mollie Johnson
Daughter · 1940 · age 19 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Viola Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Johnson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Johnson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Johnson
Sibling · 1940 · age 26
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03654-00752)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harrison Truitt | 48 | Head | Door Machinist | Alabama |
| 2 | Leila Mae Truitt | 32 | Wife | — | Alabama |
| 3 | William A. Lewis | 50 | Head | Porter | D.C. |
| 4 | Anna Lewis | 56 | Wife | Maid | Virginia |
| 5 | Gordon Brown | 30 | Head | Agent | Virginia |
| 6 | Flora Brown | 25 | Wife | — | Pennsylvania |
| 7 | Gordon Jr. Brown | 2 | Son | — | Pennsylvania |
| 8 | James Sr. Cunningham | 63 | Head | Brakeman | Pennsylvania |
| 9 | Mary A. Cunningham | 62 | Wife | — | Pennsylvania |
| 10 | Katie Cunningham | 27 | Daughter | New Worker | Pennsylvania |
| 11 | James J. Jr. Cunningham | 23 | Son | Mail Carrier | Pennsylvania |
| 12 | George W. Cunningham | 22 | Son | — | Pennsylvania |
| 13 | Margarett White | 22 | Cousin | Stenographer | Pennsylvania |
| 14 | William H. Johnson | 57 | Head | Engineer | Virginia |
| 15 | Rhoda Johnson | 52 | Wife | — | D.C. |
| 16 | Ralph Johnson | 26 | Son | Sign Painter | Pennsylvania |
| 17 | Helen Johnson | 23 | Daughter | Stenographer | Pennsylvania |
| 18 | Viola Johnson | 20 | Daughter | New Worker | Pennsylvania |
| 19 | Mollie Johnson THIS PERSON | 19 | Daughter | New Worker | Pennsylvania |
| 20 | Alfred Johnson | 17 | Son | — | Pennsylvania |
| 21 | Loretta Johnson | 16 | Daughter | — | Pennsylvania |
| 22 | George Johnson | 14 | Son | — | Pennsylvania |
| 23 | Charlotte Mitchell | 38 | Head | Proprietor | Mississippi |
| 24 | Ida Cooper | 76 | Mother | — | Mississippi |
| 25 | Thomas | 15 | Son | Salesman | Mississippi |
| 26 | Ida Cutts | 51 | Head | — | Pennsylvania |
| 27 | Wilbur West | 33 | Head | Janitor | Pennsylvania |
| 28 | Mary West | 26 | Wife | — | Pennsylvania |
| 29 | Henrietta West | 3 | Daughter | — | Pennsylvania |
| 30 | Rufus Griffin | 40 | Head | Brick Burner | Georgia |
| 31 | James Spencer | 58 | Head | Laborer | Virginia |
| 32 | Mattie Spencer | 50 | Wife | — | North Carolina |
| 33 | Howard Spencer | 28 | Son | Manager | Pennsylvania |
| 34 | Arthur Brown | 24 | Son-in-law | Laborer | Ohio |
| 35 | Ruth Brown | 24 | Wife | — | Pennsylvania |
| 36 | Jean Brown | 1 | Daughter | — | Pennsylvania |
| 37 | Winston | 22 | Lodger | Laborer | New York |
| 38 | George Hyson | 44 | Head | Janitor | Pennsylvania |
| 39 | Marie Hyson | 45 | Wife | Maid | Ohio |
| 40 | Marie Hyson | 67 | Mother | Laundry Woman | D.C. |
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)