WC
William Carter — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this William Carter across the 1910, 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents George & Mary — first a head (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Carter |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Middlesex |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Salesman |
| Industry | Wholesale Food |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Salesman |
| Est. Birth Year | ~1901 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Janice Carter | Daughter | — | 2 | ~1938 |
| William Carter | Head | — | 39 | ~1901 |
| William Carter | Son | — | 11 | ~1929 |
| Frances Carter | Spouse | — | 31 | ~1909 |
Census Appearances
1910
Middlesex, Massachusetts
Other, age 7
Middlesex, Massachusetts · implied b. ~1903 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carter |
| Given Name | William B. |
| Relationship to Head | grand-son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 18
Middlesex, Massachusetts · implied b. ~1902 — 19 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carter |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 29
Middlesex, Massachusetts · implied b. ~1901 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carter |
| Given Name | William B |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 24 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Manager |
| Industry | Green Houses VVVV |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6,000 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 39
Middlesex-County, Massachusetts · implied b. ~1901 — 4 household members
| Surname | Carter |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Middlesex |
| 1935 Residence (County) | Middlesex |
| Occupation | Salesman |
| Industry | Wholesale Food |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | No 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 William Carter across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Carter (~0.92 confidence) and mother Mary Carter (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Carter
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Mary Carter
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Carter
Head · 1940 · age 39 · b. ~1901 · 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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
34 people indexed on this census page (nara:1940:m-t0627-01685-00578)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Annie F Cooper | 74 | Head | — | Massachusetts |
| 42 | Mary Cooper | 48 | Daughter | — | Massachusetts |
| 43 | Edith A Garfield | 37 | Lodger | Typist | Vermont |
| 44 | Annie M Perkins | 40 | Lodger | Telephone Operator | Vermont |
| 45 | Bertha Weston | 42 | Lodger | Saleswoman | Massachusetts |
| 46 | Ruth Clemens | 35 | Head | Secretary | New Hampshire |
| 47 | Eileen Duffy | 33 | Lodger | Secretary | Maine |
| 48 | Judith Bridges | 44 | Head | Nurse | Washington |
| 49 | Joseph E Shannon | 26 | Head | Accountant | Massachusetts |
| 50 | Clare Shannon | 21 | Wife | Junior Clerk | Massachusetts |
| 51 | William Carter THIS PERSON | 39 | Head | Salesman | Massachusetts |
| 52 | Frances Carter | 31 | Wife | — | Massachusetts |
| 53 | William Jr. Carter | 11 | Son | — | Massachusetts |
| 54 | Janice Carter | 2 | Daughter | — | Massachusetts |
| 55 | Lena White | 54 | Head | Trained Nurse | Massachusetts |
| 56 | Susan Genere | 29 | Lodger | — | — |
| 57 | Amy Jarman | 42 | Head | Court Clerk | New Hampshire |
| 58 | Eldora Jarman | 16 | Daughter | Book-Keeper Stenographer | — |
| 59 | Michael D'Amico | 33 | Head | Contractor | Massachusetts |
| 60 | Marie D'Amico | 35 | Wife | — | Massachusetts |
| 61 | Alice Gaudette | 42 | Head | Packer | Canada |
| 62 | Florence Flyer | 39 | Lodger | Cook | Canada |
| 63 | D. Adelah Avery | 24 | Head | Color Matcher | Vermont |
| 64 | Avery | 24 | Husband | — | Massachusetts |
| 65 | Martha Wilson | 53 | Head | Janitress | Scotland |
| 66 | Ella Wilson | 25 | Daughter | Musician | Scotland |
| 67 | Reginald Richardson | 37 | Lodger | Machinist | England |
| 68 | Mary E Catella | 37 | Head | Secretary | Massachusetts |
| 69 | Marion Kimball | 32 | Lodger | Secretary | Massachusetts |
| 70 | Helen Snyder | 29 | Lodger | Asst. Mgr. | Maine |
| 71 | Walter Gaskin | 60 | Head | Salesman | Massachusetts |
| 72 | Irene Gaskin | 44 | Sister | Sales Lady | Massachusetts |
| 73 | Joseph Burke | 40 | Head | Chauffeur | Massachusetts |
| 74 | Eileen Burke | 32 | Wife | — | Massachusetts |
Pedigree Summary
William
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)