JM
James Mason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this James Mason across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Benjamin & Benjamin — first a head (b.~1908), then head of a 5-person household.
Age 32
b. ~1908
Male
Head
Born: Maine
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Mason |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Middleton |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Salesman |
| Industry | Tractors |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1150 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Occupation | Salesman |
| Township / Ward | Middleton |
| Est. Birth Year | ~1908 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Janet Mason | Daughter | — | 5 | ~1935 |
| James Mason | Head | — | 32 | ~1908 |
| Vance Gallant | Other | — | 27 | ~1913 |
| Gerald Mason | Son | — | 2 | ~1938 |
| Mary Mason | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Essex, Massachusetts
Son, age 12
Essex, Massachusetts · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Canada |
| Mother's Birthplace | Maine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Essex, Massachusetts
Son, age 23
Essex, Massachusetts · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Maine |
| Occupation | Salesman |
| Industry | Autos |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Essex-County, Massachusetts
Head, age 32
Essex-County, Massachusetts · implied b. ~1908 — 5 household members
| Surname | Mason |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Middleton |
| 1935 Residence (County) | Essex |
| Occupation | Salesman |
| Industry | Tractors |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1150 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 James Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Benjamin Mason (~0.92 confidence) and father Benjamin Mason (~0.92 confidence) and mother Annie Mason (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Benjamin Mason
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Benjamin Mason
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Annie Mason
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mason
Head · 1940 · age 32 · b. ~1908 · 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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01586-00625)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Philip Donovan | 46 | Head | Trucking | Massachusetts |
| 2 | Alice A Donovan | 49 | Wife | — | Massachusetts |
| 3 | Daniel J Donovan | 18 | Son | — | Massachusetts |
| 4 | Herbert J Currier | 51 | Head | Carpenter | Massachusetts |
| 5 | Ruth W Currier | 44 | Wife | — | Massachusetts |
| 6 | Ethel M Currier | 15 | Daughter | — | Massachusetts |
| 7 | David H Currier | 13 | Son | — | Massachusetts |
| 8 | Glenn M Currier | 11 | Son | — | Massachusetts |
| 9 | Guy E Evans | 39 | Head | Foreman | Massachusetts |
| 10 | Pearl S Evans | 35 | Wife | — | Massachusetts |
| 11 | Robert W Evans | 18 | Son | — | Illinois |
| 12 | Dana P Evans | 11 | Daughter | — | Massachusetts |
| 13 | Marilyn A Evans | 8 | Daughter | — | Massachusetts |
| 14 | John P Baker | 67 | Father-in-law | Shoe Maker | Massachusetts |
| 15 | Lorne Wheatley | 32 | Head | Carpenter | Massachusetts |
| 16 | Flora Wheatley | 31 | Wife | — | Massachusetts |
| 17 | Lorne Wheatley | 7 | Son | — | Massachusetts |
| 18 | Shirley A Wheatley | 5 | Daughter | — | Massachusetts |
| 19 | Raymond O Mckenney | 39 | Head | Laborer | Canada |
| 20 | Doris Mckenney | 40 | Wife | — | Canada |
| 21 | Raymond E Mckenney | 14 | Son | — | Massachusetts |
| 22 | Patricia Mckenney | 11 | Daughter | — | Massachusetts |
| 23 | Phyllis Mckenney | 10 | Daughter | — | Massachusetts |
| 24 | Dolores Mckenney | 4 | Daughter | — | Massachusetts |
| 25 | Donald Mckenney | 3 | Son | — | Massachusetts |
| 26 | Guy W Andrews | 46 | Head | — | Canada |
| 27 | James M Coffin | 26 | Head | — | Massachusetts |
| 28 | Eileen G Coffin | 22 | Wife | — | Massachusetts |
| 29 | James L Coffin | 3 | Son | — | Massachusetts |
| 30 | James Mason THIS PERSON | 32 | Head | Salesman | Maine |
| 31 | Mary M Mason | 32 | Wife | — | Massachusetts |
| 32 | Janet Mason | 5 | Daughter | — | Massachusetts |
| 33 | Gerald Mason | 2 | Son | — | Massachusetts |
| 34 | Vance Gallant | 27 | Lodger | Mason | France |
| 35 | Carl Peterson | 44 | Head | Foreman | New Hampshire |
| 36 | Margaret Peterson | 50 | Wife | — | Germany |
| 37 | Carl R Peterson | 10 | Son | — | Massachusetts |
| 38 | June Osborne | 21 | Head | — | Massachusetts |
| 39 | Gordon Currier | 1 | Son | — | Massachusetts |
| 40 | Ralph Currier | 49 | Father | Salesman | Massachusetts |
Pedigree Summary
James
Gen 1 · 3 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)