WM
William Mitchell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this William Mitchell across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Lawrence & George — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Mitchell |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Bank Clerk |
| Industry | National Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | C 2 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Bank Clerk |
| Township / Ward | Medford City |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Mitchell | Daughter | — | 20 | ~1920 |
| Jean Mitchell | Daughter | — | 14 | ~1926 |
| Lawrence Mitchell | Head | — | 56 | ~1884 |
| William Mitchell | Son | — | 31 | ~1909 |
| Ruth Mitchell | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 10
Middlesex, Massachusetts · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mitchell |
| Given Name | William O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 21
Middlesex, Massachusetts · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mitchell |
| Given Name | William G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Office Clerk |
| Industry | Insurance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 31
Middlesex-County, Massachusetts · implied b. ~1909 — 5 household members
| Surname | Mitchell |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Bank Clerk |
| Industry | National Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | C 2 |
| 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 William Mitchell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lawrence Mitchell (~0.92 confidence) and father George Mitchell (~0.92 confidence) and father Lawrence Mitchell (~0.92 confidence) and mother Edith Mitchell (~0.92 confidence) and mother Ruth Mitchell (~0.92 confidence) and mother Ruth Mitchell (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lawrence Mitchell
b. ~1884
Source father
● Household
· direct · ~0.92
Father
George Mitchell
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Lawrence Mitchell
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Edith Mitchell
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Ruth Mitchell
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Ruth Mitchell
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mitchell
Son · 1940 · age 31 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
Elizabeth Mitchell
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Mitchell
Sibling · 1940 · age 14
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 — 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-t0627-01612-00676)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James P. Bird | 38 | Head | Dentist | Massachusetts |
| 2 | Beatrice E. Bird | 34 | Wife | — | Massachusetts |
| 3 | Richard J. Bird | 2 | Son | — | — |
| 4 | Grace Ward | 19 | Sister | — | Maine |
| 5 | Frank Carell | 52 | Head | Manager | Italy |
| 6 | Margaret L. Carell | 49 | Wife | — | Massachusetts |
| 7 | Marguerite Carell | 15 | Daughter | — | Massachusetts |
| 8 | Constance Carell | 14 | Daughter | — | Massachusetts |
| 9 | Ruth Carell | 12 | Daughter | — | Massachusetts |
| 10 | Suzanne Carell | 9 | Daughter | — | Massachusetts |
| 11 | Helen G. Hennessey | 48 | Sister in law | Nurse | Massachusetts |
| 12 | Frederick A. Turner | 81 | Head | Rubber Stamps | Vermont |
| 13 | Mary D. Turner | 64 | Wife | — | Canada English |
| 14 | Elizabeth Fulton | 66 | Sister | — | Canada English |
| 15 | Lawrence Mitchell | 56 | Head | Advertising | Massachusetts |
| 16 | Ruth P. Mitchell | 56 | Wife | — | Massachusetts |
| 17 | William Mitchell THIS PERSON | 31 | Son | Bank Clerk | Massachusetts |
| 18 | Elizabeth M. Mitchell | 20 | Daughter | — | Massachusetts |
| 19 | Jean A. Mitchell | 14 | Daughter | — | Massachusetts |
| 20 | Guy E. Healey | 66 | Head | Lawyer | Maine |
| 21 | Gledolene Healey | 64 | Wife | — | New York |
| 22 | Grace C. Sheridan | 51 | Lodger | Piano Teacher | Massachusetts |
| 23 | William A. Warner | 76 | Head | — | Canada English |
| 24 | Julie E. Warner | 76 | Wife | — | Canada English |
| 25 | Eva A. Warner | 51 | Daughter | — | Massachusetts |
| 26 | William R. Warner | 44 | Son | Salesman | Massachusetts |
| 27 | Charles O. King | 55 | Head | Metal Broker | Massachusetts |
| 28 | Lillian A. King | 53 | Wife | — | Massachusetts |
| 29 | Donald C. King | 18 | Son | Usher | Massachusetts |
| 30 | Clyde A. Corwin | 49 | Sister in law | Nurse | Massachusetts |
| 31 | Chapman H. Chamberlain | 49 | Head | Statistician | New Hampshire |
| 32 | Lilla B. Chamberlain | 55 | Wife | — | Massachusetts |
| 33 | Donald B. Woods | 23 | Son | — | Massachusetts |
| 34 | Nethilla C. Bates | 79 | Mother in law | — | Canada English |
| 35 | George W. Jones | 78 | Head | Salesman | Massachusetts |
| 36 | Carrie Belle Jones | 70 | Wife | — | New Hampshire |
| 37 | Frank R. Milliken | 49 | Son in law | Salesman | Massachusetts |
| 38 | Gladys Milliken | 47 | Daughter | — | Massachusetts |
| 39 | Anna Gray | 91 | Sister | Clerk | Massachusetts |
| 40 | Frances Whitcomb | 19 | Grandson | — | Massachusetts |
Pedigree Summary
William + 2 siblings
Gen 1 · 6 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)