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Shirley Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Shirley Johnson across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Johnson |
| Given Name | Shirley |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | S 5 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1928 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Shirley | Age | Birth yr |
|---|---|---|---|---|
| Mildred Johnson | Daughter | — | 7 | ~1933 |
| Shirley Johnson | Daughter | — | 12 | ~1928 |
| Alice Johnson | Daughter | — | 1 | ~1939 |
| Dorothy Johnson | Daughter | — | 5 | ~1935 |
| Frances Johnson | Head | — | 30 | ~1910 |
| Edward Johnson | Son | — | 10 | ~1930 |
| William Johnson | Son | — | 8 | ~1932 |
| Frank Johnson | Son | — | 4 | ~1936 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 2
Middlesex, Massachusetts · implied b. ~1928 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Shirley F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 12
Middlesex-County, Massachusetts · implied b. ~1928 — 8 household members
| Surname | Johnson |
| Given Name | Shirley |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Highest Grade | S 5 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Shirley Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Shirley Johnson
Daughter · 1940 · age 12 · b. ~1928 · Massachusetts
★ You are viewing this record
Sibling
Mildred Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Johnson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Johnson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Johnson
Sibling · 1940 · age 1
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01702-00490)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frances J. Johnson | 30 | Head | — | New Hampshire |
| 42 | Shirley Johnson THIS PERSON | 12 | Daughter | — | Massachusetts |
| 43 | Edward Johnson | 10 | Son | — | Massachusetts |
| 44 | William Johnson | 8 | Son | — | Massachusetts |
| 45 | Mildred Johnson | 7 | Daughter | — | Massachusetts |
| 46 | Dorothy Johnson | 5 | Daughter | — | Massachusetts |
| 47 | Frank Johnson | 4 | Son | — | Massachusetts |
| 48 | Alice Johnson | 1 | Daughter | — | Massachusetts |
| 49 | Kenneth R. Eleanor | 44 | Head | Painter | Nova Scotia |
| 50 | Mabel F. Q. Eleanor | 39 | Wife | — | Massachusetts |
| 51 | Richard Eleanor | 18 | Son | Route Salesman | Massachusetts |
| 52 | Dorothy Eleanor | 17 | Daughter | — | Massachusetts |
| 53 | Ernest Eleanor | 16 | Son | New Worker | Massachusetts |
| 54 | Elizabeth Eleanor | 14 | Daughter | — | Massachusetts |
| 55 | Grace Eleanor | 13 | Daughter | — | Massachusetts |
| 56 | Arthur F. Browne | 46 | Head | Sign Maker | Massachusetts |
| 57 | Mary E. Browne | 52 | Sister | Press-Operator | Massachusetts |
| 58 | George Libby | 43 | Head | Chauffeur | Massachusetts |
| 59 | Irene Libby | 38 | Wife | — | Massachusetts |
| 60 | William Libby | 21 | Son | Sorter | Massachusetts |
| 61 | Walter Libby | 19 | Son | Sorter | Massachusetts |
| 62 | John Libby | 17 | Son | New Worker | Massachusetts |
| 63 | George Libby | 15 | Son | — | Massachusetts |
| 64 | Edward Libby | 12 | Son | — | Massachusetts |
| 65 | Irene Libby | 10 | Daughter | — | Massachusetts |
| 66 | Dorothy Libby | 5 | Daughter | — | Massachusetts |
| 67 | Lawrence Libby | 4 | Son | — | Massachusetts |
| 68 | James J. Mccluskey | 29 | Head | Senior Clerk | Massachusetts |
| 69 | Josephine M. Mccluskey | 32 | Wife | — | Massachusetts |
| 70 | Rosalie Mccluskey | 1 | Daughter | — | Massachusetts |
| 71 | Elizabeth R. Sitkiewicz | 45 | Head | Press-Feeder | Massachusetts |
| 72 | Walter J. Sitkiewicz | 20 | Son | New Worker | Massachusetts |
| 73 | Marion S. Sitkiewicz | 12 | Daughter | — | Massachusetts |
| 74 | Catherine S. Green | 85 | Mother | — | Ireland |
| 75 | Gerald Redmond | 34 | Head | Window-Washer | Nova Scotia |
| 76 | Mabel Redmond | 31 | Wife | — | Nova Scotia |
| 77 | Theresa Redmond | 13 | Daughter | — | Massachusetts |
| 78 | Margaret Redmond | 11 | Daughter | — | Massachusetts |
| 79 | Gerald Jr. Redmond | 9 | Son | — | Massachusetts |
| 80 | Thomas Redmond | 4 | Son | — | Massachusetts |
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)