EP
Evelyn Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Evelyn Peterson across the 1910, 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Carl & Carl — first a daughter (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Peterson |
| Given Name | Evelyn F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington Heights |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Operator |
| Industry | Telephone |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 1463 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Operator |
| Township / Ward | Arlington Heights |
| 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 Evelyn | Age | Birth yr |
|---|---|---|---|---|
| Helen Peterson | Daughter | — | 27 | ~1913 |
| Helen Peterson | Spouse | — | 57 | ~1883 |
| Evelyn Peterson | Daughter | — | 31 | ~1909 |
| Carl Peterson | Head | — | 61 | ~1879 |
| Rita Lennerton | Daughter | — | 16 | ~1924 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 1
Middlesex, Massachusetts · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Evelyn |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Swed. Swedish |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 10
Middlesex, Massachusetts · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Evelyn |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| 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 | Evelyn F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Operator |
| Industry | Telephone |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 31
Middlesex-County, Massachusetts · implied b. ~1909 — 5 household members
| Surname | Peterson |
| Given Name | Evelyn F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington Heights |
| 1935 Residence (County) | Middlesex |
| Occupation | Operator |
| Industry | Telephone |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 1463 |
| Highest Grade | Hs 4 |
| 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 Evelyn Peterson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carl Peterson (~0.92 confidence) and father Carl Peterson (~0.92 confidence) and father Hans Peterson (~0.92 confidence) and mother Helen Peterson (~0.92 confidence) and mother Helen Peterson (~0.92 confidence) and mother Nellie Peterson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Peterson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Carl Peterson
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Hans Peterson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Helen Peterson
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Helen Peterson
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Nellie Peterson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Evelyn Peterson
Daughter · 1940 · age 31 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
Rita Lennerton
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Peterson
Sibling · 1940 · age 27
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-t0627-01601-00145)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carl L Peterson | 61 | Head | Guard | Massachusetts |
| 2 | Helen F Peterson | 57 | Wife | — | Massachusetts |
| 3 | Evelyn F Peterson THIS PERSON | 31 | Daughter | Operator | Massachusetts |
| 4 | Helen C Peterson | 27 | Daughter | Operator | Massachusetts |
| 5 | Rita Lennerton | 16 | Daughter | — | Massachusetts |
| 6 | Stephen T Keefe | 47 | Head | Inspector | Massachusetts |
| 7 | Agnes M Keefe | 45 | Wife | — | Massachusetts |
| 8 | Rita E Keefe | 25 | Daughter | Stenographer | Massachusetts |
| 9 | Agnes M Keefe | 23 | Daughter | Stenographer | Massachusetts |
| 10 | Virginia M Keefe | 20 | Daughter | Stenographer | Massachusetts |
| 11 | Stephen T Jr Keefe | 17 | Son | — | Massachusetts |
| 12 | Herman S Bradley | 33 | Head | Radio Engineer | Massachusetts |
| 13 | Stella B Bradley | 28 | Wife | — | Massachusetts |
| 14 | Anne M Bradley | 4 | Daughter | — | Massachusetts |
| 15 | Edmund J King | 66 | Father-in-law | Ironworker | Canada French |
| 16 | Elizabeth King | 65 | Mother-in-law | — | Canada French |
| 17 | Joseph B King | 32 | Head | Painter | Massachusetts |
| 18 | Gertrude King | 26 | Wife | — | New York |
| 19 | Janice King | 3 | Daughter | — | Massachusetts |
| 20 | Joseph King | 1 | Son | — | Massachusetts |
| 21 | Emil King | 62 | Uncle | Ironworker | Canada French |
| 22 | Ernest Hall | 31 | Head | Research Chemist | Massachusetts |
| 23 | Jean Hall | 32 | Wife | — | Massachusetts |
| 24 | Leigh A Hall | 3 | Son | — | New Jersey |
| 25 | Lott L Tierney | 54 | Head | Elevator Operator | Newfoundland |
| 26 | Hannah G Tierney | 49 | Wife | — | Newfoundland |
| 27 | Helen E Tierney | 22 | Daughter | Bookkeeper | Massachusetts |
| 28 | Kathleen Tierney | 15 | Daughter | — | Massachusetts |
| 29 | Gustaf R Nutteen | 40 | Head | Painter | Sweden |
| 30 | Lilly A Nutteen | 41 | Wife | — | Sweden |
| 31 | Lenore S Nutteen | 13 | Daughter | — | Massachusetts |
| 32 | Carlton W Nutteen | 11 | Son | — | Massachusetts |
| 33 | John A Prichard | 52 | Head | Warehouse Man | Massachusetts |
| 34 | Alice M Prichard | 49 | Wife | — | Maine |
| 35 | Joseph A King | 39 | Head | Printer | Maine |
| 36 | Ruth F King | 30 | Wife | — | Massachusetts |
| 37 | Kenneth A King | 7 | Son | — | Massachusetts |
| 38 | Joanne R King | 4 | Daughter | — | Massachusetts |
| 39 | Roselle King | 58 | Mother | — | Maine |
| 40 | Henry J Gaffney | 61 | Head | Postal Clerk | Canada-English |
Pedigree Summary
Evelyn + 2 siblings
Gen 1 · 6 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)