JW
James Welsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Welsh across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Welsh |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Beer Company |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chauffeur |
| Township / Ward | Malden City |
| Est. Birth Year | ~1912 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Robert Welsh | Son | — | — | |
| Rita Welsh | Spouse | — | 22 | ~1918 |
| James Welsh | Son | — | 1 | ~1939 |
| James Welsh | Head | — | 28 | ~1912 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 17
Middlesex, Massachusetts · implied b. ~1913 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 28
Middlesex-County, Massachusetts · implied b. ~1912 — 4 household members
| Surname | Welsh |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Occupation | Chauffeur |
| Industry | Beer Company |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 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 James Welsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Welsh
Head · 1940 · age 28 · b. ~1912 · 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-t0627-01608-00238)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lionel Crivello | 10 | Son | — | Massachusetts |
| 2 | Marie Dorothy Crivello | 5 | Daughter | — | Massachusetts |
| 3 | Albert F. Jewell | 33 | Head | Fireman | Massachusetts |
| 4 | Selma S. Jewell | 32 | Wife | — | Massachusetts |
| 5 | Albert F. Jewell | 11 | Son | — | Massachusetts |
| 6 | Arlene E. Jewell | 9 | Daughter | — | Massachusetts |
| 7 | Donald R. Jewell | 7 | Son | — | Massachusetts |
| 8 | James Jewell | 2 | Son | — | Massachusetts |
| 9 | Frederick V. Campbell | 46 | Head | Laborer | Canada English |
| 10 | Agnes M. Campbell | 44 | Wife | — | Massachusetts |
| 11 | Ellen Mcsweeney | 81 | Boarder | — | Massachusetts |
| 12 | Byron Andrews | 54 | Boarder | Mason | Canada English |
| 13 | Ralph A. Hillow | 47 | Head | Chauffeur | Massachusetts |
| 14 | M. Marcella Hillow | 50 | Wife | — | Massachusetts |
| 15 | Eugene Cochran | 66 | Head | — | Ireland |
| 16 | Mary Cochran | 60 | Wife | — | Ireland |
| 17 | Margaret Cochran | 38 | Daughter | Clerk | Massachusetts |
| 18 | Thomas Pappas | 25 | Head | Machinist | Massachusetts |
| 19 | Marion Pappas | 24 | Wife | — | Massachusetts |
| 20 | Richard Pappas | 3 | Son | — | Massachusetts |
| 21 | Diane Pappas | 1 | Daughter | — | Massachusetts |
| 22 | Bella Pappas | 22 | Sister | Waitress | Massachusetts |
| 23 | James Welsh THIS PERSON | 28 | Head | Chauffeur | Massachusetts |
| 24 | Rita Welsh | 22 | Wife | — | Massachusetts |
| 25 | James Welsh | 1 | Son | — | Massachusetts |
| 26 | Robert Welsh | None | Son | — | Massachusetts |
| 27 | Howard J. Olson | 30 | Head | Salesman | Massachusetts |
| 28 | Wife Olson | None | F | — | — |
| 29 | Catherine Olson | 6 | Daughter | — | Massachusetts |
| 30 | Maurice Linneen | 30 | Head | Officer | Massachusetts |
| 31 | Rose Linneen | 29 | Wife | — | Massachusetts |
| 32 | Hannah Callahan | 70 | Head | — | Ireland |
| 33 | Agnes Callahan | 44 | Daughter | Clerical | Massachusetts |
| 34 | James Callahan | 42 | Son | Mail Carrier | Massachusetts |
| 35 | Margaret Callahan | 39 | Daughter | Clerical | Massachusetts |
| 36 | Helena Callahan | 35 | Daughter | Clerical | Massachusetts |
| 37 | Agnes Callahan | 26 | Son | Laborer | Massachusetts |
| 38 | Mary Voice | 63 | Head | — | Massachusetts |
| 39 | Lillian Voice | 37 | Daughter | Seamstress | Massachusetts |
| 40 | Robert Voice | 32 | Son | Paperhanger | Massachusetts |
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)