OC
Oscar Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Oscar Carlson across the 1910, 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Christina & Carl — first a head (b.~1889), then head of a 4-person household.
Age 51
b. ~1889
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Carlson |
| Given Name | Oscar L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Some house |
| Additional Details | |
| Occupation | 54 |
| Industry | Operator |
| Class of Worker | Filling Station |
| Highest Grade | No 4 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | 54 |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1889 |
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 Oscar | Age | Birth yr |
|---|---|---|---|---|
| Bernard Carlson | Son | — | 26 | ~1914 |
| Dorothy Carlson | Other | — | 24 | ~1916 |
| Oscar Carlson | Head | — | 51 | ~1889 |
| Jennie Carlson | Spouse | — | 53 | ~1887 |
Census Appearances
1910
Essex, Massachusetts
Son, age 19
Essex, Massachusetts · implied b. ~1891 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Oscar B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Pattern maker |
| Industry | Electric works |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Essex, Massachusetts
Head, age 30
Essex, Massachusetts · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Oscar |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | salesman |
| Industry | rubber co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Head, age 41
Essex, Massachusetts · implied b. ~1889 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Oscar L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 23 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Salesman |
| Industry | Wholesale Oil |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Head, age 51
Essex-County, Massachusetts · implied b. ~1889 — 4 household members
| Surname | Carlson |
| Given Name | Oscar L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Some house |
| Occupation | 54 |
| Industry | Operator |
| Class of Worker | Filling Station |
| Highest Grade | No 4 |
| 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 Oscar Carlson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Christina Carlson (~0.92 confidence) and father Carl Carlson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Christina Carlson
b. ~1861
Source mother
● Household
· direct · ~0.92
Father
Carl Carlson
b. ~1862
Source father
● Household
· direct · ~0.92
This person
Anchor record
Oscar Carlson
Head · 1940 · age 51 · b. ~1889 · 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 — 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-t0627-01697-00022)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Bronson | 4 | Daughter | — | Massachusetts |
| 2 | Patrick J. Lyon | 51 | Head | 44 | Eire |
| 3 | Hannah Lyon | 50 | Wife | — | Eire |
| 4 | Irving W. Wilson | 43 | Head | 40 | Massachusetts |
| 5 | Ruth M. Wilson | 43 | Wife | — | Massachusetts |
| 6 | Beatrice A. Wilson | 18 | Daughter | — | Massachusetts |
| 7 | Robert Wilson | 15 | Son | — | Massachusetts |
| 8 | Marcia Wilson | 14 | Daughter | — | Massachusetts |
| 9 | Joseph D. Bourgoin | 36 | Head | 40 | Canada-English |
| 10 | Laura E. Bourgoin | 32 | Wife | 40 | Massachusetts |
| 11 | Harriet Le Blanc | 70 | Boarder | — | Canada-English |
| 12 | Pierre D. Penney | 55 | Head | 40 | France |
| 13 | Blanche Penney | 56 | Wife | — | Canada-English |
| 14 | Frederic Penney | 25 | Son | — | Massachusetts |
| 15 | Emilie A. Penney | 22 | Daughter | — | Massachusetts |
| 16 | Oscar L. Carlson THIS PERSON | 51 | Head | 54 | Massachusetts |
| 17 | Jennie K. Carlson | 53 | Wife | — | Massachusetts |
| 18 | Bernard K. Carlson | 26 | Son | 54 | Massachusetts |
| 19 | Dorothy P. Carlson | 24 | Daughter-in-law | 48 | Massachusetts |
| 20 | Victor E. Holmes | 50 | Head | 40 | Maine |
| 21 | Clarice D. Holmes | 47 | Wife | — | England |
| 22 | Alice L. Crosby | 51 | Housekeeper | Housekeeper | Massachusetts |
| 23 | James G. Hines | 38 | Head | — | Massachusetts |
| 24 | James Fridson | 35 | Head | 40 | Massachusetts |
| 25 | Mary E. Fridson | 32 | Wife | 25 | Massachusetts |
| 26 | Mary Coleman | 79 | Head | — | Massachusetts |
| 27 | Catherine Coleman | 71 | Sister | — | Massachusetts |
| 28 | Richard Doherty | 34 | Head | 44 | Massachusetts |
| 29 | Mary Doherty | 30 | Wife | — | Massachusetts |
| 30 | Richard Doherty | 8 | Son | — | Massachusetts |
| 31 | Kenneth Doherty | 1 | Son | — | Massachusetts |
| 32 | Eric W. Hedlund | 50 | Head | 40 | Sweden |
| 33 | Elsie C. Hedlund | 45 | Wife | — | Sweden |
| 34 | Harriet Hedlund | 22 | Daughter | — | Sweden |
| 35 | August Berklund | 66 | Head | — | Sweden |
| 36 | Jennie Berklund | 64 | Wife | — | Nova Scotia |
| 37 | Joseph Perreca | 25 | Head | 60 | Massachusetts |
| 38 | Mary Perreca | 24 | Wife | 44 | Massachusetts |
| 39 | James Sheehan | 50 | Head | 44 | Massachusetts |
| 40 | Marion Sheehan | 44 | Sister | 40 | Massachusetts |
Pedigree Summary
Oscar
Gen 1 · 2 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)