HP
Harold Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cumberland-County, Maine
Our Model Tree links this Harold Peterson across the 1920, 1930 and 1940 US Censuses in Cumberland-County, Maine (XGBoost, ~Confirmed), with identified parents Augustus & Arthur — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: Maine
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cumberland-County, Maine |
| Surname | Peterson |
| Given Name | Harold |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Brunswick (unincorporated) |
| 1935 Residence (County) | Cumberland |
| Additional Details | |
| Occupation | electrician |
| Industry | cotton mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1034 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Occupation | Electrician |
| Township / Ward | Brunswick Unincorporated |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Harold Peterson | Head | — | 31 | ~1909 |
| Beulah Peterson | Spouse | — | 30 | ~1910 |
| Lorraine Peterson | Daughter | — | 11 | ~1929 |
Census Appearances
1920
Cumberland, Maine
Son, age 10
Cumberland, Maine · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Cumberland, Maine
Son, age 21
Cumberland, Maine · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 19 |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | Salesman |
| Industry | Chain Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Cumberland-County, Maine
Head, age 31
Cumberland-County, Maine · implied b. ~1909 — 3 household members
| Surname | Peterson |
| Given Name | Harold |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Brunswick (unincorporated) |
| 1935 Residence (County) | Cumberland |
| Occupation | electrician |
| Industry | cotton mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1034 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Augustus Peterson (~0.92 confidence) and father Arthur Peterson (~0.92 confidence) and mother Catherine Peterson (~0.92 confidence) and mother Laura Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Augustus Peterson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Arthur Peterson
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Catherine Peterson
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Laura Peterson
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Peterson
Head · 1940 · age 31 · b. ~1909 · Maine
★ 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 — Cumberland-County, Maine
Open full size
1940 US Federal Census — Cumberland-County, Maine
Page Contents
35 people indexed on this census page (nara:1940:m-t0627-01474-00259)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Caro B. Hall | 35 | wife | — | Maine |
| 42 | Barbara A. Hall | 5 | daughter | — | Maine |
| 43 | Janet D. Hall | 1 | daughter | — | Maine |
| 44 | Robert M. Zardiff | 37 | head | Manager | Maine |
| 45 | Evelyn D. Zardiff | 32 | wife | — | Maine |
| 46 | Robert Zardiff | 4 | son | — | Maine |
| 47 | Suzanne Zardiff | 2 | daughter | — | Maine |
| 48 | Helma A. Zardiff | 0 | daughter | — | Maine |
| 49 | Milo A. Perkins | 38 | head | Manager Retail Drug Store | Maine |
| 50 | Martha Perkins | 29 | wife | — | Maine |
| 51 | Nancy Perkins | 4 | daughter | — | Maine |
| 52 | Mary Perkins | 1 | daughter | — | Maine |
| 53 | Edith F. White | 41 | head | Manager Of Office Auto | Massachusetts |
| 54 | Edward A. Birch | 41 | head | Manager Of Office Auto | Massachusetts |
| 55 | Ruth E. Birch | 40 | wife | — | Massachusetts |
| 56 | Boleslaw Poreva | 32 | head | Chef | Poland |
| 57 | Gertrude Poreva | 30 | wife | — | Massachusetts |
| 58 | Shirley Poreva | 10 | daughter | — | Massachusetts |
| 59 | Harold Peterson THIS PERSON | 31 | head | Electrician | Maine |
| 60 | Beulah Peterson | 30 | wife | — | Maine |
| 61 | Lorraine Peterson | 11 | daughter | — | Maine |
| 62 | George A. Priest | 65 | head | General Agent | Maine |
| 63 | Alice E. Priest | 69 | wife | — | Maine |
| 64 | Herbert H. Dyer | 46 | head | Railway Express Agent | Maine |
| 65 | Ruth Dyer | 40 | wife | — | Maine |
| 66 | Edward Mckenzie | 60 | head | Monumental Sealer | Canada English |
| 67 | Mary A. Mckenzie | 60 | wife | — | Canada English |
| 68 | Florence Mckenzie | 20 | daughter | Waitress | Canada English |
| 69 | Alvin Mckenzie | 18 | son | — | Canada English |
| 70 | S. Dickson Allen | 47 | head | Manual Training Teacher | Maine |
| 71 | Lucy P. Allen | 48 | wife | Teacher | Massachusetts |
| 72 | Phillip S. Allen | 21 | son | — | Maine |
| 73 | Ralph G. Allen | 18 | son | — | Connecticut |
| 74 | Samuel D. Allen | 11 | son | — | Maine |
| 75 | Barbara Noyes | 23 | keeper | House Keeper | Maine |
Pedigree Summary
Harold
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)