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Frank Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Frank Mason across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 3-person household.
Age 66
b. ~1874
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Mason |
| Given Name | Frank L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Accountant |
| Industry | Contractor |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1000 |
| Highest Grade | C-2 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Accountant |
| Township / Ward | Medford City |
| Est. Birth Year | ~1874 |
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 Frank | Age | Birth yr |
|---|---|---|---|---|
| Frank Mason | Head | — | 66 | ~1874 |
| Etta Mason | Spouse | — | 56 | ~1884 |
| Walter Mason | Son | — | 31 | ~1909 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 45
Middlesex, Massachusetts · implied b. ~1875 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Frank L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | New Hampshire |
| Occupation | Manager |
| Industry | Department Store |
| 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
Middlesex, Massachusetts
Head, age 56
Middlesex, Massachusetts · implied b. ~1874 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Frank L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 24 |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Canada English |
| Occupation | treasurer |
| Industry | furniture store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 13,000 |
| Radio Set | R |
| Veteran | no |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 66
Middlesex-County, Massachusetts · implied b. ~1874 — 3 household members
| Surname | Mason |
| Given Name | Frank L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Accountant |
| Industry | Contractor |
| Class of Worker | PW |
| Hours Worked | 42 |
| 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 Frank Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Frank Mason
Head · 1940 · age 66 · b. ~1874 · 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
37 people indexed on this census page (nara:1940:m-t0627-01612-00739)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph Goodstein | 34 | Head | Contractor | Massachusetts |
| 42 | Annie S. Goodstein | 27 | Wife | — | Canada |
| 43 | Robert Goodstein | 6 | Son | — | Massachusetts |
| 44 | Sheldon Goodstein | 4 | Son | — | Massachusetts |
| 45 | Fern Goodstein | 3 | Daughter | — | Massachusetts |
| 46 | Freeman Murray | 21 | Brother-in-law | Painter | Canada |
| 48 | Samuel H. Welker | 59 | Head | Oculist | Massachusetts |
| 49 | Mary P. Welker | 58 | Wife | — | New Hampshire |
| 50 | Andre Welker | 23 | Daughter | Secretary | Massachusetts |
| 51 | Henry H. Piper | 87 | Father-in-law | Dentist (History) | New Hampshire |
| 52 | John A. Thornquist | 63 | Head | Accountant | Sweden |
| 53 | Marion S. Thornquist | 25 | Daughter | Teacher | Massachusetts |
| 54 | Helen Thornquist | 22 | Daughter | Housekeeper | Massachusetts |
| 55 | Edgar M. Burhoe | 52 | Head | Foreman | England |
| 56 | Hilda E. Burhoe | 53 | Wife | — | England |
| 57 | Sarah A. Thompson | 62 | Lodger | — | Massachusetts |
| 58 | Frank L. Mason THIS PERSON | 66 | Head | Accountant | Massachusetts |
| 59 | Etta D. Mason | 56 | Wife | — | Massachusetts |
| 60 | Walter Mason | 31 | Son | Clerk | Massachusetts |
| 61 | John Alexander | 38 | Head | Clerk | Scotland |
| 62 | Eva E. Alexander | 36 | Wife | — | Massachusetts |
| 63 | John Alexander | 18 | Son | — | Massachusetts |
| 64 | Robert Alexander | 16 | Son | — | Massachusetts |
| 65 | George Alexander | 15 | Son | — | Massachusetts |
| 66 | Charles Alexander | 14 | Son | — | Massachusetts |
| 67 | Marjorie Alexander | 12 | Daughter | — | Massachusetts |
| 68 | Jean Alexander | 5 | Daughter | — | Massachusetts |
| 69 | Warren E. Barley | 28 | Head | Lawyer | Massachusetts |
| 70 | Irene Barley | 25 | Wife | — | Massachusetts |
| 72 | Anton R. Tebbetts | 31 | Head | Embalmer | Massachusetts |
| 73 | Josephine R. Tebbetts | 26 | Wife | — | New Hampshire |
| 74 | Eugene Tebbetts | 8 | Son | — | Massachusetts |
| 75 | Edward Tebbetts | 0 | Son | — | Massachusetts |
| 76 | Charlotte L. Tebbetts | 65 | Mother | — | Maine |
| 77 | Herbert Marson | 72 | Uncle | Oiler | Maine |
| 78 | Edward Saunders | 15 | Nephew | — | Massachusetts |
| 80 | Altia Hopper | 43 | Head | Milk Salesman | Canada |
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)