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John Simpson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Simpson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Margaret — first a head (b.~1907), then head of a 5-person household.
Age 33
b. ~1907
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Simpson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Middlesex |
| Additional Details | |
| Occupation | Jeweler |
| Industry | Retail Jeweler |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2340 |
| Highest Grade | H-4 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Jeweler |
| Township / Ward | Belmont Town |
| Est. Birth Year | ~1907 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Joan Simpson | Daughter | — | 8 | ~1932 |
| Carol Simpson | Daughter | — | 3 | ~1937 |
| Nancy Simpson | Daughter | — | ~1940 | |
| John Simpson | Head | — | 33 | ~1907 |
| Anna Simpson | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 23
Middlesex, Massachusetts · implied b. ~1907
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Simpson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 22 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Salesman |
| Industry | Furniture Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 33
Middlesex-County, Massachusetts · implied b. ~1907 — 5 household members
| Surname | Simpson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Middlesex |
| Occupation | Jeweler |
| Industry | Retail Jeweler |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2340 |
| Highest Grade | H-4 |
| 1935 Residence | Massachusetts |
| 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 John Simpson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Simpson (~0.92 confidence) and mother Margaret Simpson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Simpson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Margaret Simpson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Simpson
Head · 1940 · age 33 · b. ~1907 · Massachusetts
★ You are viewing this record
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-t0627-01602-00947)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martha M. Ryan | 62 | Mother-in-law | — | Canada-English |
| 2 | Edgar M. Hamilton | 57 | Head | Salesman | Canada-English |
| 3 | Elizabeth F. Hamilton | 51 | Wife | — | Massachusetts |
| 4 | Vivian T. Hamilton | 25 | Daughter | Stenographer | Massachusetts |
| 5 | Christine M. Harper | 52 | Sister-in-law | Clerk | Massachusetts |
| 6 | John Simpson THIS PERSON | 33 | Head | Jeweler | Massachusetts |
| 7 | Anna C. Simpson | 32 | Wife | — | Massachusetts |
| 8 | Joan C. Simpson | 8 | Daughter | — | Massachusetts |
| 9 | Carol A. Simpson | 3 | Daughter | — | Massachusetts |
| 10 | Nancy C. Simpson | 0 | Daughter | — | Massachusetts |
| 11 | Alfred C. Winter | 53 | Head | Engineer | Canada-English |
| 12 | Eleanor C. Winter | 47 | Wife | — | Massachusetts |
| 13 | Herbert C. Winter | 12 | Son | — | Massachusetts |
| 14 | Ruth L. Kohler | 33 | Lodger | Teacher | New York |
| 15 | Elizabeth D. Willard | 71 | Head | — | Massachusetts |
| 16 | Charles E. Kraffam | 72 | Head | Inventory Clerk | Massachusetts |
| 17 | Emery L. Kraffam | 68 | Wife | — | Massachusetts |
| 18 | Elizabeth L. Kraffam | 27 | Daughter | Teacher | Vermont |
| 19 | William A. Sanborn | 54 | Head | Supt. Water Works | Massachusetts |
| 20 | Mary D. Sanborn | 55 | Wife | — | Massachusetts |
| 21 | Ester D. Sanborn | 25 | Daughter | Nurse | Massachusetts |
| 22 | William E. Sanborn | 17 | Son | — | Massachusetts |
| 23 | Anna A. Pierson | 76 | Head | — | Maine |
| 24 | Albertine D. Pierson | 58 | Daughter | — | Maine |
| 25 | Elsie M. Morrill | 51 | Daughter | — | Maine |
| 26 | Anna Gildred | 40 | Daughter | Sales Girl | Maine |
| 27 | Josiah H. Benton | 38 | Head | Clerk | Massachusetts |
| 28 | Eleanor Benton | 36 | Wife | — | Massachusetts |
| 29 | Rudolf Osgood | 38 | Head | Doctor | Massachusetts |
| 30 | Margaret K. Osgood | 39 | Wife | Clinic Executive | New York |
| 31 | Theodore K. Osgood | 8 | Son | — | Massachusetts |
| 32 | Rose Hues | 49 | Housekeeper | Housekeeper | Germany |
| 33 | Marcus Chase | 58 | Head | — | Massachusetts |
| 34 | Lydia Aaron | 57 | Head | Dressmaker | Massachusetts |
| 35 | Lewis Aaron | 33 | Son | Clerk | Massachusetts |
| 36 | John E. Teagan | 41 | Head | Lawyer | Massachusetts |
| 37 | Gladys M. Teagan | 35 | Wife | — | Massachusetts |
| 38 | John Jr. Teagan | 7 | Son | — | Massachusetts |
| 39 | M. Marilyn Teagan | 6 | Daughter | — | Massachusetts |
| 40 | William P. Teagan | 0 | Son | — | Massachusetts |
Pedigree Summary
John
Gen 1 · 2 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)