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Harold Anderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Harold Anderson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Frans & Frank — first a head (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Anderson |
| Given Name | Harold E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Winchester |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Accountant |
| Industry | Dredging |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Accountant |
| Township / Ward | Winchester |
| Est. Birth Year | ~1904 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Barbara Anderson | Daughter | — | ~1940 | |
| Harold Anderson | Head | — | 36 | ~1904 |
| Harold Anderson | Son | — | 2 | ~1938 |
| Louise Anderson | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 16
Middlesex, Massachusetts · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Harold E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 26
Middlesex, Massachusetts · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Harold E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Accountant |
| Industry | General Products |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 36
Middlesex-County, Massachusetts · implied b. ~1904 — 4 household members
| Surname | Anderson |
| Given Name | Harold E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Winchester |
| 1935 Residence (County) | Middlesex |
| Occupation | Accountant |
| Industry | Dredging |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| 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 Harold Anderson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frans Anderson (~0.92 confidence) and father Frank Anderson (~0.92 confidence) and mother Emily Anderson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frans Anderson
b. ~1869
Source father
● Household
· direct · ~0.92
Father
Frank Anderson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Emily Anderson
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Anderson
Head · 1940 · age 36 · b. ~1904 · 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
37 people indexed on this census page (nara:1940:m-t0627-01622-00124)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Muriel S. Barner | 36 | Wife | — | Massachusetts |
| 42 | Jacqueline Barner | 12 | Daughter | — | Massachusetts |
| 43 | John S. Jr. Barner | 8 | Son | — | Massachusetts |
| 44 | Ida M. B. Sohon | 64 | Mother in law | — | Massachusetts |
| 45 | Harold E. Anderson THIS PERSON | 36 | Head | Accountant | Massachusetts |
| 46 | Louise R. Anderson | 35 | Wife | — | Massachusetts |
| 47 | Harold E. Anderson | 2 | Son | — | Massachusetts |
| 48 | Barbara E. Anderson | 0 | Daughter | — | Massachusetts |
| 49 | Shepard S. Senter | 36 | Head | Salesman | Massachusetts |
| 50 | Alice S. Senter | 33 | Wife | — | Massachusetts |
| 51 | Shepard S. Jr. Senter | 6 | Son | — | Massachusetts |
| 52 | William R. Baker | 58 | Head | Salesman | Massachusetts |
| 53 | Marguerite B. Baker | 58 | Wife | — | Massachusetts |
| 54 | Jason B. Baker | 21 | Son | Salesman | Massachusetts |
| 55 | William M. Solberg | 43 | Head | Salesman | Illinois |
| 56 | Gertrude M. Solberg | 34 | Wife | — | Oklahoma |
| 57 | Rose J. Solberg | 10 | Daughter | — | Illinois |
| 58 | Harold J. Power | 47 | Lodger | Consulting Engineer | Massachusetts |
| 59 | George A. Daley | 69 | Head | — | Massachusetts |
| 60 | Mary L. Daley | 58 | Wife | — | Massachusetts |
| 61 | Erskine H. Jr. Kelley | 33 | Head | Salesman | Massachusetts |
| 62 | Ruth W. Kelley | 28 | Wife | — | North Carolina |
| 63 | Erskine H. 3Rd Kelley | 1 | Son | — | Massachusetts |
| 64 | Mary A. Warren | 86 | Head | — | New Hampshire |
| 65 | Eric F. Adams | 53 | Nephew | Shoemaker | New Hampshire |
| 66 | Alice Adams | 51 | Nephew's Wife | — | Canada |
| 67 | Eugene B. Rotundi | 33 | Head | Chauffeur | Massachusetts |
| 68 | Mary G. Rotundi | 29 | Wife | — | Massachusetts |
| 69 | Eugene B. Rotundi | 9 | Son | — | Massachusetts |
| 70 | Mary E. Rotundi | 6 | Daughter | — | Massachusetts |
| 71 | Roger Rotundi | 5 | Son | — | Massachusetts |
| 72 | David E. Rotundi | 2 | Son | — | Massachusetts |
| 73 | Joseph A. Rotundi | 1 | Son | — | Massachusetts |
| 74 | Angelina Q. Vigliano | 29 | Head | Sewing | Massachusetts |
| 75 | Julia Vigliano | 9 | Daughter | — | Massachusetts |
| 76 | Angelo Vigliano | 8 | Son | — | Massachusetts |
| 77 | Frank X. Sarsia | 23 | Lodger | Apprentice | Massachusetts |
Pedigree Summary
Harold
Gen 1 · 3 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)