GS
Gertrude Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Gertrude Smith across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & Richard — first a daughter (b.~1901), then head of a 5-person household.
Age 39
b. ~1901
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Smith |
| Given Name | Gertrude E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1901 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Louise Smith | Daughter | — | 21 | ~1919 |
| Mildred Smith | Daughter | — | 31 | ~1909 |
| Gertrude Smith | Daughter | — | 39 | ~1901 |
| Joseph Smith | Head | — | 71 | ~1869 |
| James Smith | Son | — | 26 | ~1914 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 18
Middlesex, Massachusetts · implied b. ~1902 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Gertrude E |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 28
Middlesex, Massachusetts · implied b. ~1902 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Dress-maker |
| Industry | Dressmaking |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 39
Middlesex-County, Massachusetts · implied b. ~1901 — 5 household members
| Surname | Smith |
| Given Name | Gertrude E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 8 |
| 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 Gertrude Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Smith (~0.92 confidence) and father Richard Smith (~0.92 confidence) and father Richard Smith (~0.92 confidence) and mother Margaret Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Smith
b. ~1869
Source father
● Household
· direct · ~0.92
Father
Richard Smith
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Richard Smith
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Margaret Smith
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Gertrude Smith
Daughter · 1940 · age 39 · b. ~1901 · Massachusetts
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Sibling
Louise Smith
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Smith
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Smith
Sibling · 1940 · age 31
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-t0627-01702-00127)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alfred Montosea | 21 | Son | Helper | Michigan |
| 42 | Gaddas Guy Montosea | 55 | Son-in-law | Barber | Italy |
| 43 | John Wraight | 60 | Head | Helper | Scotland |
| 44 | Jane B. Wraight | 63 | Wife | — | Scotland |
| 45 | Arthur R. Wraight | 27 | Son | Baker | Scotland |
| 46 | James Wilson | 57 | Head | Superintendent | Scotland |
| 47 | Annie T. Wilson | 47 | Wife | — | Scotland |
| 48 | Douglas Wilson | 24 | Son | Laborer | New York |
| 49 | Parker A. Wilson | 18 | Son | — | Scotland |
| 50 | Anne T. Wilson | 15 | Daughter | — | Massachusetts |
| 51 | Elizabeth Wilson | 8 | Daughter | — | Massachusetts |
| 52 | Richard Kelley | 46 | Head | Mechanic | New York |
| 53 | Nellie M. Kelley | 36 | Wife | — | West Virginia |
| 54 | Robert J. Kelley | 18 | Son | Cleaner | Massachusetts |
| 55 | Helen M. Kelley | 14 | Daughter | — | Massachusetts |
| 56 | Rita M. Kelley | 11 | Daughter | — | Massachusetts |
| 57 | Albert De Angelis | 38 | Head | Shoe Worker | France |
| 58 | Elvira De Angelis | 33 | Wife | — | Italy |
| 59 | Antoinette De Angelis | 13 | Daughter | — | Massachusetts |
| 60 | Rita De Angelis | 12 | Daughter | — | Massachusetts |
| 61 | Celia De Angelis | 11 | Daughter | — | Massachusetts |
| 62 | Dolores De Angelis | 8 | Daughter | — | Massachusetts |
| 63 | Barbara De Angelis | 7 | Daughter | — | Massachusetts |
| 64 | Albert De Angelis | 1 | Son | — | Massachusetts |
| 65 | John A. Barber | 59 | Head | Master Mariner | Massachusetts |
| 66 | Agnes B. Barber | 43 | Wife | — | Rhode Island |
| 67 | Doris E. Barber | 13 | Daughter | — | Massachusetts |
| 68 | Martin J. Murphy | 31 | Head | Selector | Eire |
| 69 | Bridget Murphy | 32 | Wife | — | Eire |
| 70 | Daniel O'Leary | 79 | Lodger | — | Eire |
| 71 | Emily D. Hale | 61 | Head | — | Canada-English |
| 72 | Emily E. Hale | 36 | Daughter | Housekeeper | New Hampshire |
| 73 | William F. Hale | 29 | Son | Clerk | Massachusetts |
| 74 | Anna I. Flynn | 34 | Lodger | Dipper | Massachusetts |
| 75 | Joseph Smith | 71 | Head | Packer | Canada-English |
| 76 | Gertrude E. Smith THIS PERSON | 39 | Daughter | — | Massachusetts |
| 77 | Mildred Smith | 31 | Daughter | Clerk | Massachusetts |
| 78 | James Smith | 26 | Son | Clerk | Massachusetts |
| 79 | Louise Smith | 21 | Daughter | Salesgirl | Massachusetts |
| 80 | Thomas J. Plante | 57 | Head | Supervisor | New York |
Pedigree Summary
Gertrude + 3 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)