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Helen Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Helen Peterson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Hannah & Hans — first a spouse (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Peterson |
| Given Name | Helen L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Banana Truck |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1540 |
| Highest Grade | H-2 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Truck Driver |
| Township / Ward | Medford City |
| Est. Birth Year | ~1909 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Barbara Peterson | Daughter | — | 6 | ~1934 |
| Carol Peterson | Daughter | — | 4 | ~1936 |
| Henry Peterson | Head | — | 37 | ~1903 |
| Donald Peterson | Son | — | 8 | ~1932 |
| Helen Peterson | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1909 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 21
Middlesex, Massachusetts · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Helen L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Stenographer |
| Industry | Laundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Spouse, age 31
Middlesex-County, Massachusetts · implied b. ~1909 — 5 household members
| Surname | Peterson |
| Given Name | Helen L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Truck Driver |
| Industry | Banana Truck |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1540 |
| Highest Grade | H-2 |
| 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 Helen Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Hannah Peterson (~0.92 confidence) and father Hans Petersen (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Hannah Peterson
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Hans Petersen
b. ~1870
Source father
● Household
· direct · ~0.92
This person
Anchor record
Helen Peterson
Spouse · 1940 · age 31 · b. ~1909 · 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-t0627-01612-00123)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John H. Donahue | 29 | Head | Truck Driver | Massachusetts |
| 42 | Florence Donahue | 30 | Wife | — | Massachusetts |
| 43 | J. Howard Donahue | 8 | Son | — | Massachusetts |
| 44 | Elinor Donahue | 5 | Daughter | — | Massachusetts |
| 45 | Carol Donahue | 3 | Daughter | — | Massachusetts |
| 46 | James Donahue | 0 | Son | — | Massachusetts |
| 47 | Rose Glennon | 35 | Sister-in-law | Hairdresser | Massachusetts |
| 48 | Henry W. Peterson | 37 | Head | — | Massachusetts |
| 49 | Helen L. Peterson THIS PERSON | 31 | Wife | Truck Driver | Massachusetts |
| 50 | Donald G. Peterson | 8 | Son | — | Massachusetts |
| 51 | Barbara J. Peterson | 6 | Daughter | — | Massachusetts |
| 52 | Carol A. Peterson | 4 | Daughter | — | Massachusetts |
| 53 | William J. Mcgrath | 39 | Head | Maintenance | Eire |
| 54 | Nora C. Mcgrath | 37 | Wife | — | Eire |
| 55 | Eileen M. Mcgrath | 3 | Daughter | — | Massachusetts |
| 56 | William J. Mcgrath | 0 | Son | — | Massachusetts |
| 57 | Frank W. Pote | 57 | Head | Professor | Pennsylvania |
| 58 | Marguerite H. Pote | 47 | Wife | — | Ohio |
| 59 | Lloyd W. Pote | 24 | Son | Mechanical Engineer | Massachusetts |
| 60 | Ralph H. Pote | 23 | Son | Boiler Maker | Massachusetts |
| 61 | Frank R. Pote | 20 | Son | — | Massachusetts |
| 62 | Douglas A. Pote | 19 | Son | — | Massachusetts |
| 63 | Janice M. Pote | 9 | Daughter | — | Massachusetts |
| 64 | Florian A. Strovink | 31 | Head | Research Director | Massachusetts |
| 65 | Mary R. Strovink | 30 | Wife | — | New Hampshire |
| 66 | Mary L. Strovink | 6 | Daughter | — | Massachusetts |
| 67 | Robert K. Strovink | 4 | Son | — | Massachusetts |
| 68 | Kurt Strovink | 0 | Son | — | Massachusetts |
| 69 | John H. Barker | 57 | Head | Salesman | New Hampshire |
| 70 | Mildred Barker | 43 | Wife | Stenographer | Massachusetts |
| 71 | Lizzie A. Barrows | 73 | Head | — | Massachusetts |
| 72 | Lloyd L. Freeman | 66 | Lodger | File Clerk | Massachusetts |
| 73 | John F. Brennan | 66 | Head | Clothing Pressman | Massachusetts |
| 74 | Annie T. Brennan | 70 | Wife | — | Massachusetts |
| 75 | Stanley W. Barrows | 43 | Head | Salesman | Maine |
| 76 | Vera B. Barrows | 43 | Wife | — | Maine |
| 77 | Stanley Barrows | 15 | Son | — | Maine |
| 78 | Walter L. Corliss | 55 | Head | Clerk | Massachusetts |
| 79 | Florence J. Corliss | 55 | Wife | — | Massachusetts |
| 80 | Roger S. Corliss | 23 | Son | Clerk | Massachusetts |
Pedigree Summary
Helen
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)