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William Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Olson across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 6-person household.
Age 51
b. ~1889
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Olson |
| Given Name | William S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Machinist |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Machinist |
| Township / Ward | Boston 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Henry Olson | Son | — | 18 | ~1922 |
| Amelia Olson | Spouse | — | 51 | ~1889 |
| Paul Olson | Son | — | 9 | ~1931 |
| Robert Olson | Son | — | 22 | ~1918 |
| Leonard Olson | Son | — | 21 | ~1919 |
| William Olson | Head | — | 51 | ~1889 |
Census Appearances
1920
Suffolk, Massachusetts
Head, age 31
Suffolk, Massachusetts · implied b. ~1889 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1880 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Machinist |
| Industry | Car Repair |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Suffolk, Massachusetts
Head, age 41
Suffolk, Massachusetts · implied b. ~1889 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | First papers filed |
| Year of Immigration | 1893 |
| Age at First Marriage | 20 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | machinist |
| Industry | railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 4200 |
| Radio Set | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Suffolk-County, Massachusetts
Head, age 51
Suffolk-County, Massachusetts · implied b. ~1889 — 6 household members
| Surname | Olson |
| Given Name | William S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Occupation | Machinist |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 William Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Olson
Head · 1940 · age 51 · b. ~1889 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01678-00383)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kelley Edwin F Kelley | 5 | Son | — | Massachusetts |
| 2 | James W Kelley | 3 | Son | — | Massachusetts |
| 3 | Joseph X Galli | 66 | Head | — | Italy |
| 4 | Rosetta Galli | 32 | Daughter | — | Italy |
| 5 | John Galli | 29 | Son | Asst Ground Super | Massachusetts |
| 6 | Mary Galli | 25 | Daughter | Laborer | Massachusetts |
| 7 | Anthony Galli | 24 | Son | — | Massachusetts |
| 8 | Carmen Galli | 16 | Son | — | Massachusetts |
| 9 | Allan D. X Bartlett | 35 | Head | Drafting | Massachusetts |
| 10 | Kathleen Bartlett | 34 | Wife | — | Massachusetts |
| 11 | Francis Bartlett | 13 | Son | — | Massachusetts |
| 12 | Lawrence F. Kelly | 24 | Head | Truck Driver | Rhode Island |
| 13 | Mary Emma Kelly | 23 | Wife | — | Massachusetts |
| 14 | Lawrence F. Kelly | 1 | Son | — | Massachusetts |
| 15 | Joseph F. Joyce | 37 | Head | Foreman | Massachusetts |
| 16 | Ella Theresa Joyce | 35 | Wife | Operator | Massachusetts |
| 17 | Alice Patricia Joyce | 8 | Daughter | — | Massachusetts |
| 18 | Rita Frances Joyce | 6 | Daughter | — | Massachusetts |
| 19 | Martha X Gunter | 68 | Head | Housewife | Canada English |
| 20 | Calista Freeman | 46 | Daughter | Canvasser | Massachusetts |
| 21 | Michael X Moccia | 28 | Head | Iron Worker | Massachusetts |
| 22 | Evelyn Moccia | 23 | Wife | — | Massachusetts |
| 23 | Nellie O'Donnell | 69 | Head | Secretary | England |
| 24 | John J. O'Donnell | 30 | Son | Painter | Massachusetts |
| 25 | Francis Wuchenbeiser | 28 | Head | Painter | Massachusetts |
| 26 | Mildred Wuchenbeiser | 24 | Wife | — | Massachusetts |
| 27 | Thomas Mountain | 55 | Head | — | Prince Edward Island |
| 28 | Julia Mountain | 45 | Wife | — | Canada French |
| 29 | William S. Olson THIS PERSON | 51 | Head | Machinist | Sweden |
| 30 | Amelia X Olson | 51 | Wife | — | Connecticut |
| 31 | Robert Olson | 22 | Son | Apprentice | Massachusetts |
| 32 | Leonard Olson | 21 | Son | Order Boy | Massachusetts |
| 33 | Henry Olson | 18 | Son | — | Massachusetts |
| 34 | Paul Olson | 9 | Son | — | Massachusetts |
| 35 | Eugene O. X Hayes | 52 | Head | Laborer | Maine |
| 36 | Margaret Zera Hayes | 47 | Wife | — | Maine |
| 37 | Gerard E. Hayes | 27 | Son | Repair Shop | Massachusetts |
| 38 | Robert J. Hayes | 22 | Son | — | Massachusetts |
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)