WB
William Baldwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this William Baldwin across the 1910, 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 3-person household.
Age 63
b. ~1877
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Baldwin |
| Given Name | William T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | cashier |
| Industry | Storage warehouse |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2184 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Cashier |
| Township / Ward | Medford City |
| Est. Birth Year | ~1877 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Mabel Baldwin | Spouse | — | 65 | ~1875 |
| Robert Baldwin | Son | — | 36 | ~1904 |
| William Baldwin | Head | — | 63 | ~1877 |
Census Appearances
1910
Middlesex, Massachusetts
Head, age 33
Middlesex, Massachusetts · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | William J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | New York |
| Years Married | 9 |
| Father's Birthplace | Connecticut |
| Mother's Birthplace | Maine |
| Occupation | Cashier |
| Industry | Storage Co. |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1920
Middlesex, Massachusetts
Head, age 43
Middlesex, Massachusetts · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | Connecticut |
| Mother's Birthplace | Maine |
| Occupation | Cook |
| Industry | Steamship |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Middlesex, Massachusetts
Head, age 53
Middlesex, Massachusetts · implied b. ~1877 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | William F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 23 |
| Father's Birthplace | Connecticut |
| Mother's Birthplace | Maine |
| Occupation | Cashier |
| Industry | Drug - Wholesale |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Radio Set | R |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Middlesex-County, Massachusetts
Head, age 63
Middlesex-County, Massachusetts · implied b. ~1877 — 3 household members
| Surname | Baldwin |
| Given Name | William T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | cashier |
| Industry | Storage warehouse |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2184 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Baldwin across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Baldwin
Head · 1940 · age 63 · b. ~1877 · 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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01611-00054)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter J Walker | 41 | Husband | Totally Disabled | Mass |
| 42 | Mary J Walker | 19 | daughter | Clerk | Mass |
| 43 | Joseph G Walker | 17 | son | — | Mass |
| 44 | Catherine Doherty | 61 | Wife | Seamstress | Irish Free State |
| 45 | Thomas S. Fergus | 44 | Head | Bookkeeper | Mass |
| 46 | Alice Fergus | 43 | Wife | — | Mass |
| 47 | Thomas Fergus | 18 | Son | — | Mass |
| 48 | Patricia Fergus | 17 | Son | — | Mass |
| 49 | Joan Fergus | 14 | daughter | — | Mass |
| 50 | Alice Fergus | 12 | daughter | — | Mass |
| 51 | Mary L Fergus | 9 | daughter | — | Mass |
| 52 | John Gaffney | 57 | brother | Pipe Fitter | Mass |
| 53 | Mary L Gaffney | 51 | Sister | — | Mass |
| 54 | Ellen R Gaffney | 49 | Sister | Stenographer | Mass |
| 55 | William S O'Brien | 26 | Head | — | Mass |
| 56 | Sadie E O'Brien | 71 | Wife | — | Mass |
| 57 | George O'Brien | 16 | grand son | — | Mass |
| 58 | Joseph C O'Brien | 36 | son | Painter | Mass |
| 59 | Belin End Of Block 272 | None | 273 | — | — |
| 60 | Anna P De Avellar | 72 | Head | — | Brazil |
| 61 | Anna L De Avellar | 45 | daughter | Teacher | Mass |
| 62 | William T Baldwin THIS PERSON | 63 | Head | Cashier | New York |
| 63 | Mabel C Baldwin | 65 | Wife | — | Mass |
| 64 | Robert M Baldwin | 36 | Son | Repair Man | Mass |
| 65 | Lewis T Provost | 51 | Head | Sheet Metal Worker | Vermont |
| 66 | Ruth Provost | 44 | Wife | — | Vermont |
| 67 | Theresa Provost | 21 | daughter | Secretary | Mass |
| 68 | Herman Provost | 17 | Son | — | Mass |
| 69 | Irma Provost | 17 | daughter | — | Mass |
| 70 | Herbert Wells | 20 | Head | Investigator | Mass |
| 71 | Margaret Wells | 28 | Wife | — | Mass |
| 72 | Herbert Wells | 1 | Son | — | Mass |
| 73 | Elizabeth Murray | 42 | Mother | — | Mass |
| 74 | John Tierney | 65 | Head | Mechanic | Mass |
| 75 | Margaret T Tierney | 65 | Wife | — | Mass |
| 76 | Helen Leary | 30 | Niece | Clerk | Mass |
| 77 | Herbert H Sylvester | 40 | Head | Construction Carpenter | Mass |
| 78 | Mary Sylvester | 55 | Wife | — | Canada Eng |
| 79 | Mary Sylvester | 14 | daughter | — | Mass |
| 80 | Stanley F Dutter | 34 | Head | Teller | Mass |
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)