AP
Arthur Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Arthur Peterson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Otto & Otto — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Peterson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Operator |
| Industry | Ray Printing |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 496 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Operator |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1917 |
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 Arthur | Age | Birth yr |
|---|---|---|---|---|
| Edna Peterson | Daughter | — | 25 | ~1915 |
| Nannie Peterson | Head | — | 51 | ~1889 |
| Arthur Peterson | Son | — | 23 | ~1917 |
| Walter Peterson | Son | — | 30 | ~1910 |
| John Peterson | Son | — | 27 | ~1913 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 3
Middlesex, Massachusetts · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Arthur J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Arthur L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 23
Middlesex-County, Massachusetts · implied b. ~1917 — 5 household members
| Surname | Peterson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville city |
| 1935 Residence (County) | Middlesex |
| Occupation | Operator |
| Industry | Ray Printing |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 496 |
| 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 Arthur Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Otto Peterson (~0.92 confidence) and father Otto Peterson (~0.92 confidence) and mother Nannie Peterson (~0.92 confidence) and mother Ruth Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Otto Peterson
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Otto Peterson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Nannie Peterson
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Ruth Peterson
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Arthur Peterson
Son · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Edna Peterson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Peterson
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Peterson
Sibling · 1940 · age 30
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-t0627-01705-00231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Stone | 63 | Head | — | Vermont |
| 42 | Lilla Thompson | 76 | Housekeeper | Housekeeper | Massachusetts |
| 43 | Frank Gagnon | 44 | Head | Waiter | Massachusetts |
| 44 | Carrie Gagnon | 44 | Wife | — | Maine |
| 45 | Peter Dulong | 54 | Head | Baker | Holland |
| 46 | Helen Dulong | 54 | Wife | — | Holland |
| 47 | Leroy Dulong | 24 | Son | — | Pennsylvania |
| 48 | Maurice Sullivan | 35 | Head | Clerk | Massachusetts |
| 49 | Margaret Sullivan | 35 | Wife | — | Massachusetts |
| 50 | Joseph Sullivan | 2 | Son | — | Massachusetts |
| 51 | Julia Sullivan | 68 | Mother | — | W. Erie |
| 52 | Salvatore Zimmotte | 39 | Head | Presser | Italy |
| 53 | Grace Zimmotte | 32 | Wife | — | Massachusetts |
| 54 | Richard Zimmotte | 5 | Son | — | Massachusetts |
| 55 | Norman Zimmotte | 5 | Son | — | Massachusetts |
| 56 | Sylvia Zimmotte | 4 | Daughter | — | Massachusetts |
| 57 | Nannie Peterson | 51 | Head | — | Sweden |
| 58 | Walter Peterson | 30 | Son | Shipfitter | Massachusetts |
| 59 | John E. Peterson | 27 | Son | Chauffeur | Massachusetts |
| 60 | Edna J. Peterson | 25 | Daughter | Sales Girl | Massachusetts |
| 61 | Arthur Peterson THIS PERSON | 23 | Son | Operator | Massachusetts |
| 62 | Sheridan Pettby | 50 | Head | Mechanic | Canada English |
| 63 | Grace Pettby | 43 | Wife | — | Canada English |
| 64 | Mary C. Wulff | 66 | Mother-in-law | — | Canada English |
| 65 | Munroe A. Herrick | 44 | Roomer | Laborer | Canada English |
| 66 | Mary E. Herrick | 32 | Roomer | — | Massachusetts |
| 67 | David A. Herrick | 1 | Roomer | — | Massachusetts |
| 68 | Theodore Elder | 30 | Head | Painter | Massachusetts |
| 69 | Helen Elder | 23 | Wife | — | Canada English |
| 70 | Hope Elder | 0 | Daughter | — | Massachusetts |
| 71 | Paul Sagily | 0 | Boarder | — | Massachusetts |
| 72 | Charles Cunningham | 63 | Head | Clothing Cutter | Massachusetts |
| 73 | Gertrude Cunningham | 64 | Wife | — | Massachusetts |
| 74 | William Cunningham | 31 | Son | — | Massachusetts |
| 75 | Catherine R. Cunningham | 31 | Daughter-in-law | — | Massachusetts |
| 76 | Janette Raine | 37 | Daughter | Baker | Massachusetts |
| 77 | Gertrude Raine | 15 | Granddaughter | — | Massachusetts |
| 78 | William Raine | 13 | Grandson | — | Massachusetts |
| 79 | Eugene Gagne | 43 | Head | Painter | Canada French |
| 80 | Alexine Gagne | 41 | Wife | — | Canada French |
Pedigree Summary
Arthur + 3 siblings
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)