FP
Fred Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Plymouth-County, Massachusetts
Our Model Tree links this Fred Peterson across the 1920, 1930 and 1940 US Censuses in Plymouth-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Carl & Carl — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Plymouth-County, Massachusetts |
| Surname | Peterson |
| Given Name | Fred W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Brockton city |
| 1935 Residence (County) | Plymouth |
| Additional Details | |
| Occupation | Clerk |
| Industry | Wholesale Warehouse |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1300 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Brockton 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Fred | Age | Birth yr |
|---|---|---|---|---|
| Edward Peterson | Son | — | 4 | ~1936 |
| Viola Peterson | Spouse | — | 30 | ~1910 |
| Fred Peterson | Head | — | 31 | ~1909 |
Census Appearances
1920
Plymouth, Massachusetts
Son, age 11
Plymouth, Massachusetts · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Frederick W |
| 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 | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Plymouth, Massachusetts
Son, age 21
Plymouth, Massachusetts · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Frederick W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Clerk |
| Industry | Law Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Plymouth-County, Massachusetts
Head, age 31
Plymouth-County, Massachusetts · implied b. ~1909 — 3 household members
| Surname | Peterson |
| Given Name | Fred W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Brockton city |
| 1935 Residence (County) | Plymouth |
| Occupation | Clerk |
| Industry | Wholesale Warehouse |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1300 |
| Highest Grade | H 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 Fred Peterson across 3 US Census years (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 mother Elsie Peterson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Peterson
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Carl Peterson
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Elsie Peterson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Fred Peterson
Head · 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 — Plymouth-County, Massachusetts
Open full size
1940 US Federal Census — Plymouth-County, Massachusetts
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-01636-00469)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur E. Hopgood | 57 | Head | Cut-Sole Sorter | Canada |
| 2 | Elsie M. Hopgood | 47 | Wife | — | Massachusetts |
| 3 | Eva M. Hopgood | 24 | Daughter | Canner | New Hampshire |
| 4 | Arthur Jr. Hopgood | 21 | Son | — | Massachusetts |
| 5 | William B. Hopgood | 20 | Son | Stock-Clerk | Massachusetts |
| 6 | Albert E. Hopgood | 18 | Son | Clerk | Massachusetts |
| 7 | Harvey F. Hopgood | 16 | Son | Clerk | Massachusetts |
| 8 | Dorothy E. Hopgood | 14 | Daughter | — | Massachusetts |
| 9 | Henry E. Hopgood | 13 | Son | — | Massachusetts |
| 10 | Ethel R. Hopgood | 11 | Daughter | — | Massachusetts |
| 11 | Elsie V. Hopgood | 10 | Daughter | — | Massachusetts |
| 12 | Roger H. Hopgood | 8 | Son | — | Massachusetts |
| 13 | Luther M. Horton | 62 | Head | Night Man | Massachusetts |
| 14 | Anna B. Horton | 61 | Wife | — | Nova Scotia |
| 15 | Longy Sivolose | 20 | Head | Ice Cutter | Poland |
| 16 | Thomas H. Spillane | 38 | Head | Shoe Worker | Massachusetts |
| 17 | Alice E. Spillane | 37 | Wife | — | Massachusetts |
| 18 | Thomas W. Spillane | 15 | Son | — | Massachusetts |
| 19 | John E. Spillane | 13 | Son | — | Massachusetts |
| 20 | Edward J. Spillane | 7 | Son | — | Massachusetts |
| 23 | Fred W. Peterson THIS PERSON | 31 | Head | Clerk | Massachusetts |
| 24 | Viola M. Peterson | 30 | Wife | — | Massachusetts |
| 25 | Edward C. Peterson | 4 | Son | — | Massachusetts |
| 27 | Wilfred P. Robillard | 40 | Head | Truck Driver | Massachusetts |
| 28 | Josephine M. Robillard | 36 | Wife | — | Connecticut |
| 29 | Wilfred P. Jr. Robillard | 15 | Son | — | Massachusetts |
| 30 | Edward J. Robillard | 13 | Son | — | Massachusetts |
| 31 | Richard G. Robillard | 11 | Son | — | Massachusetts |
| 32 | Lawrence Robillard | 9 | Son | — | Massachusetts |
| 33 | Donald G. Robillard | 6 | Son | — | Massachusetts |
| 34 | Roger J. Robillard | 3 | Son | — | Massachusetts |
| 36 | Clarence W. Young | 51 | Head | Painter | Newfoundland |
| 37 | Florence M. Young | 21 | Wife | — | Massachusetts |
| 38 | William Young | 4 | Son | — | Massachusetts |
| 39 | Frederick L. Mosher | 37 | Head | Messman | Massachusetts |
| 40 | Marion E. Mosher | 34 | Wife | — | Massachusetts |
Pedigree Summary
Fred
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)