CP
Carl Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Carl Peterson across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1899), then head of a 3-person household.
Age 41
b. ~1899
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Peterson |
| Given Name | Carl O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn city |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1899 |
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 Carl | Age | Birth yr |
|---|---|---|---|---|
| Elsie Peterson | Head | — | 35 | ~1905 |
| Carl Peterson | Son | — | 41 | ~1899 |
| Walter Peterson | Son | — | 39 | ~1901 |
Census Appearances
1920
Essex, Massachusetts
Son, age 21
Essex, Massachusetts · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Carl O |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Toolmaker |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Son, age 31
Essex, Massachusetts · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Machinist |
| Industry | Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 41
Essex-County, Massachusetts · implied b. ~1899 — 3 household members
| Surname | Peterson |
| Given Name | Carl O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn city |
| 1935 Residence (County) | Essex |
| Highest Grade | H-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 Carl Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Peterson (~0.92 confidence) and father John Peterson (~0.92 confidence) and mother Elsie Peterson (~0.92 confidence) and mother Elsie Peterson (~0.50 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.82
Father
John Peterson
b. ~1867
Source father
● Household
· direct · ~0.92
Father
John Peterson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Elsie Peterson
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Elsie Peterson
b. ~1905
Source mother
● Household
· direct · ~0.5
This person
Anchor record
Carl Peterson
Son · 1940 · age 41 · b. ~1899 · Massachusetts
★ You are viewing this record
Sibling
Walter Peterson
Sibling · 1940 · age 39
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01695-00528)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary F. Rose | 28 | Wife | — | Massachusetts |
| 42 | Walter T. Rose | 56 | Head | Cutter | England |
| 43 | Blanche R. Rose | 54 | Wife | Hairdressing | England |
| 44 | Elsie G. Peterson | 35 | Head | — | Sweden |
| 45 | Carl O. Peterson THIS PERSON | 41 | Son | — | Massachusetts |
| 46 | Walter R. Peterson | 39 | Son | Laborer | Massachusetts |
| 47 | Earl M. Wooten | 39 | Head | Mechanic | Canada-English |
| 48 | Nellie E. Wooten | 39 | Wife | — | Massachusetts |
| 49 | Daughter Marjorie | None | F | N.Y.A. | — |
| 50 | Virginia Wooten | 9 | Daughter | — | Massachusetts |
| 51 | John Koerner | 31 | Head | Staker | Massachusetts |
| 52 | Anne Koerner | 26 | Wife | Waitress | Massachusetts |
| 53 | Joanne Koerner | 1 | Daughter | — | Massachusetts |
| 54 | Mary J. Long | 61 | Head | — | Massachusetts |
| 55 | Charles F. Long | 36 | Son | Foreman | Massachusetts |
| 56 | Mary J. Gammon | 67 | Head | — | New Hampshire |
| 57 | Mary F. Ducey | 39 | Daughter | Stitcher | Massachusetts |
| 58 | Marie G. Ducey | 14 | Grand-dau | — | Massachusetts |
| 59 | Ralph J. Tarr | 37 | Head | Steamfitter | Massachusetts |
| 60 | Alice G. Tarr | 45 | Wife | — | Canada-Eng |
| 61 | Vincenzo Quintiliani | 57 | Head | Laster | Italy |
| 62 | Loreta Quintiliani | 54 | Wife | — | Italy |
| 63 | Elsie Quintiliani | 39 | Daughter | Machinist | Italy |
| 64 | Olga Quintiliani | 27 | Daughter | Disk Tester | Massachusetts |
| 65 | Aida Quintiliani | 25 | Daughter | Dressmaker | Massachusetts |
| 66 | Etta Quintiliani | 21 | Daughter | Dressmaker | Massachusetts |
| 67 | Ralph Quintiliani | 18 | Son | Laborer | Massachusetts |
| 68 | Leo W. Hatfield | 39 | Head | Proprietor | Nova Scotia |
| 69 | Mary J. Hatfield | 30 | Wife | — | Massachusetts |
| 70 | Robert E. Hatfield | 10 | Son | — | Massachusetts |
| 71 | Lloyd M. Hatfield | 8 | Son | — | Massachusetts |
| 72 | Edward Kaloust | 51 | Head | Projectionist | Turkey |
| 73 | Frances A. Kaloust | 47 | Wife | — | Massachusetts |
| 74 | William Kaloust | 20 | Son | Meat Cutter | Massachusetts |
| 75 | Armond H. Kaloust | 18 | Son | Newsworker | New Hampshire |
| 76 | H. Francis Kaloust | 16 | Son | — | New Hampshire |
| 77 | Gerard J. Kaloust | 14 | Son | — | New Hampshire |
| 78 | Russell B. Hathaway | 25 | Head | Compressor | New Hampshire |
| 79 | Marcella B. Hathaway | 21 | Wife | — | Massachusetts |
| 80 | Russell B. Jr. Hathaway | 2 | Son | — | Massachusetts |
Pedigree Summary
Carl + 1 sibling
Gen 1 · 4 parents
~0.81
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)