JW
John Welch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Welch across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 10-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Welch |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington Town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Shipper |
| Industry | Printing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 226 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Shipper |
| Township / Ward | Arlington Town |
| Est. Birth Year | ~1918 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Welch | Daughter | — | 21 | ~1919 |
| Katherine Welch | Daughter | — | 17 | ~1923 |
| Pauline Welch | Daughter | — | 15 | ~1925 |
| Dorothy Welch | Daughter | — | 8 | ~1932 |
| Paul Welch | Head | — | 44 | ~1896 |
| Charles Welch | Son | — | 13 | ~1927 |
| John Welch | Son | — | 22 | ~1918 |
| Paul Welch | Son | — | 5 | ~1935 |
| Donald Welch | Son | — | 2 | ~1938 |
| Gertrude Welch | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 12
Middlesex, Massachusetts · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Canada-English |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 22
Middlesex-County, Massachusetts · implied b. ~1918 — 10 household members
| Surname | Welch |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington Town |
| 1935 Residence (County) | Middlesex |
| Occupation | Shipper |
| Industry | Printing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 226 |
| Highest Grade | H-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 John Welch across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Welch
Son · 1940 · age 22 · b. ~1918 · Massachusetts
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Sibling
Charles Welch
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Welch
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Welch
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Welch
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Welch
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Welch
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Welch
Sibling · 1940 · age 17
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-t0627-01601-00575)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Blanche T. Olson | 23 | Daughter | Floor Girl | Massachusetts |
| 2 | Mildred M. Olson | 21 | Daughter | Mounter | Massachusetts |
| 3 | Robert P. Furlong | 81 | Father-in-law | — | Canada-English |
| 4 | Robert M. Furlong | 45 | Brother-in-law | Truck Driver | Massachusetts |
| 5 | Milton B. Baker | 34 | Head | Minister | Pennsylvania |
| 6 | Ruth L. Baker | 36 | Wife | — | Massachusetts |
| 7 | Frederick B. Lewis | 35 | Head | Chemist | Massachusetts |
| 8 | Janet W. Lewis | 29 | Wife | Secretary | Massachusetts |
| 9 | Janet T. Lewis | 2 | Daughter | — | Massachusetts |
| 10 | Janet T. Kilpatrick | 59 | Mother-in-law | — | Scotland |
| 11 | Charles T. Butler | 25 | Head | Mechanic | Massachusetts |
| 12 | Elizabeth S. Butler | 26 | Wife | — | Massachusetts |
| 13 | John E. Hutchings | 49 | Head | Truck Driver | Canada-English |
| 14 | Bertha O. Hutchings | 49 | Wife | — | Massachusetts |
| 15 | John E. Jr. Hutchings | 20 | Son | Baker | Massachusetts |
| 16 | Edward R. Gaso | 28 | Head | Attendant & Mechanic | Massachusetts |
| 17 | Margaret X. Gaso | 26 | Wife | — | Scotland |
| 18 | John E. Gaso | 7 | Son | — | Massachusetts |
| 19 | Edward R. Jr. Gaso | 5 | Son | — | Massachusetts |
| 20 | Donald R. Gaso | 2 | Son | — | Massachusetts |
| 21 | Paul R. Welch | 44 | Head | Auto Mechanic | Massachusetts |
| 22 | Gertrude X. Welch | 41 | Wife | — | Canada-English |
| 23 | John P. Welch THIS PERSON | 22 | Son | Shipper | Massachusetts |
| 24 | Gertrude M. Welch | 21 | Daughter | — | Massachusetts |
| 25 | Katherine P. Welch | 17 | Daughter | — | Massachusetts |
| 26 | Pauline N. Welch | 15 | Daughter | — | Massachusetts |
| 27 | Charles E. Welch | 13 | Son | — | Massachusetts |
| 28 | Dorothy M. Welch | 8 | Daughter | — | Massachusetts |
| 29 | Paul R. Jr. Welch | 5 | Son | — | Massachusetts |
| 30 | Donald N. Welch | 2 | Son | — | Massachusetts |
| 31 | Daniel F. Donovan | 43 | Head | Examiner | Massachusetts |
| 32 | Agnes C. Donovan | 42 | Wife | Fitter | Massachusetts |
| 33 | Marion A. Donovan | 21 | Daughter | Office Clerk | Massachusetts |
| 34 | Dorothy J. Donovan | 19 | Daughter | — | Massachusetts |
| 35 | Daniel M. Driscoll | 60 | Head | Photo Engraver | Massachusetts |
| 36 | Anna U. Driscoll | 60 | Wife | — | Massachusetts |
| 37 | Elma M. Driscoll | 26 | Daughter | Settle Of Claims | Massachusetts |
| 38 | Walter M. Driscoll | 24 | Son | Carpenter'S Helper | Massachusetts |
| 39 | Francis P. Driscoll | 22 | Son | Billing Clerk | Massachusetts |
| 40 | Amos J. Carver | 34 | Head | Rent Collector | Massachusetts |
Related Census Records
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)