AP
Arthur Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Worcester-County, Massachusetts
Our Model Tree links this Arthur Peterson across the 1920, 1930 and 1940 US Censuses in Worcester-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Alice & Alice — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Worcester-County, Massachusetts |
| Surname | Peterson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Additional Details | |
| Occupation | Watchmaker apprentice |
| Industry | Jewelry Store |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 176 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Watchmaker Apprentice |
| Township / Ward | Worcester City |
| Est. Birth Year | ~1919 |
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 Arthur | Age | Birth yr |
|---|---|---|---|---|
| Marion Peterson | Daughter | — | 14 | ~1926 |
| Marion Swenson | Daughter | — | 22 | ~1918 |
| Alice Peterson | Head | — | 47 | ~1893 |
| Arthur Peterson | Son | — | 21 | ~1919 |
Census Appearances
1920
Worcester, Massachusetts
Son, age 1
Worcester, Massachusetts · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Worcester, Massachusetts
Son, age 11
Worcester, Massachusetts · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Worcester-County, Massachusetts
Son, age 21
Worcester-County, Massachusetts · implied b. ~1919 — 4 household members
| Surname | Peterson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Occupation | Watchmaker apprentice |
| Industry | Jewelry Store |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 176 |
| Highest Grade | Hs 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 Arthur Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Alice Peterson (~0.92 confidence) and mother Alice Peterson (~0.92 confidence) and mother Alice Peterson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Alice Peterson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Alice Peterson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Alice Peterson
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Arthur Peterson
Son · 1940 · age 21 · b. ~1919 · Massachusetts
★ You are viewing this record
Sibling
Marion Peterson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Swenson
Sibling · 1940 · age 22
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 — Worcester-County, Massachusetts
Open full size
1940 US Federal Census — Worcester-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01715-00534)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Katherine Mcdonnell | 57 | Wife | Housekeeper | Ireland |
| 2 | Kathleen F Mcdonnell | 15 | Daughter | — | Massachusetts |
| 3 | Mary Mcdonnell | 13 | Daughter | — | Massachusetts |
| 4 | Charles Sablicki | 32 | Head | Salesman | Massachusetts |
| 5 | Elizabeth Sablicki | 29 | Wife | Housekeeper | Massachusetts |
| 6 | Virginia Sablicki | 3 | Daughter | — | Massachusetts |
| 7 | Mary Donovan | 57 | Head | Housewife | Massachusetts |
| 8 | Francis Donovan | 22 | Son | Mailer | Massachusetts |
| 9 | Raymond Donovan | 18 | Son | — | Massachusetts |
| 10 | Ranson | 59 | Head | Sewer | Connecticut |
| 11 | Theodore Belisle | 37 | Head | Painter | Massachusetts |
| 12 | Viola Belisle | 39 | Wife | Housewife | Massachusetts |
| 13 | Donald Belisle | 6 | Son | — | Massachusetts |
| 14 | Alice Peterson | 47 | Head | Seamstress | Massachusetts |
| 15 | Arthur Peterson THIS PERSON | 21 | Son | Watchmaker Apprentice | Massachusetts |
| 16 | Marion R Swenson | 22 | Daughter | Comptometer | Massachusetts |
| 17 | Marion Peterson | 14 | Daughter | — | Massachusetts |
| 18 | Joseph Szablewski | 66 | Head | Sausage Maker | Poland |
| 19 | Mary Szablewski | 54 | Wife | Housewife | Poland |
| 20 | Helen Szablewski | 34 | Daughter | Printer | Massachusetts |
| 21 | Sophie Szablewski | 26 | Daughter | — | Massachusetts |
| 22 | Julius Grzymski | 48 | Lodger | Sausagemaker | Poland |
| 23 | Adam Michalak | 55 | Lodger | Sausage Maker | Poland |
| 24 | Frederick Donohue | 42 | Head | Clerk | Massachusetts |
| 25 | Catherine Donohue | 45 | Wife | Housewife | Massachusetts |
| 26 | John Quinlivan | 45 | Head | Fireman | Ireland |
| 27 | Mary Quinlivan | 40 | Wife | Housewife | Massachusetts |
| 28 | Mary Quinlivan | 11 | Daughter | — | Massachusetts |
| 29 | John Quinlivan | 9 | Son | — | Massachusetts |
| 30 | Bernard Quinlivan | 8 | Son | — | Massachusetts |
| 31 | Robert Quinlivan | 3 | Son | — | Massachusetts |
| 32 | Richard Quinlivan | 1 | Son | — | Massachusetts |
| 33 | Jacob Ezrolsovitz | 78 | Head | — | Russia |
| 34 | Esther Ezrolsovitz | 61 | Wife | — | Russia |
| 35 | Harry Rosenthal | 37 | Son | Painter | Russia |
| 36 | Sarah Renault | 35 | Daughter | Bookkeeper | Russia |
| 37 | Rosalie Renault | 1 | Daughter | — | Massachusetts |
| 38 | James Richmond | 34 | Head | Wire Worker | Scotland |
| 39 | Lena Richmond | 29 | Wife | House Keeper | Massachusetts |
| 40 | Jeanette Richmond | 8 | Daughter | — | Massachusetts |
Pedigree Summary
Arthur + 2 siblings
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)