JW
John Welsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Welsh across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Welsh |
| Given Name | John, Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | N. Braddock Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | S-8 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | N Braddock Borough |
| Est. Birth Year | ~1926 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Welsh | Head | — | 58 | ~1882 |
| Margaret Matthews | Daughter | — | 29 | ~1911 |
| Katherine Mcdonough | Other | — | 50 | ~1890 |
| Bernard Welsh | Son | — | 26 | ~1914 |
| Grace Welsh | Other | — | 27 | ~1913 |
| James Matthews | Other | — | 32 | ~1908 |
| John Welsh | Son | — | 14 | ~1926 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 2
Allegheny, Pennsylvania · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 14
Allegheny-County, Pennsylvania · implied b. ~1926 — 7 household members
| Surname | Welsh |
| Given Name | John, Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | N. Braddock Borough |
| 1935 Residence (County) | Allegheny |
| Highest Grade | S-8 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Welsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Welsh
Son · 1940 · age 14 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
Bernard Welsh
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Matthews
Sibling · 1940 · age 29
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03413-00077)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Christman | 35 | Head | Painter | Maryland |
| 2 | Helen Christman | 30 | Wife | — | Pennsylvania |
| 3 | Peggy Christman | 7 | Daughter | — | Pennsylvania |
| 4 | Joral Mauck | 25 | Head | Laborer | Pennsylvania |
| 5 | Marie Mauck | 21 | Wife | Saleswoman | Pennsylvania |
| 6 | Clyde, Sr Masters | 45 | Head | Crancman | Pennsylvania |
| 7 | Donna Masters | 16 | Daughter | — | Pennsylvania |
| 8 | Norma Masters | 12 | Daughter | — | Pennsylvania |
| 9 | Clyde, Jr Masters | 4 | Son | — | Pennsylvania |
| 10 | Gustav Schuffko | 73 | Head | — | Germany |
| 11 | Augusta Schuffko | 64 | Wife | — | Germany |
| 12 | John, Sr Welsh | 58 | Head | — | Pennsylvania |
| 13 | John, Jr Welsh THIS PERSON | 14 | Son | — | Pennsylvania |
| 14 | James Matthews | 32 | Son-in-law | Pit Recorder | Pennsylvania |
| 15 | Margaret Matthews | 29 | Daughter | Telephone Operator | Pennsylvania |
| 16 | Bernard Welsh | 26 | Son | Truck Driver | Pennsylvania |
| 17 | Grace Welsh | 27 | Daughter-in-law | Dental Assistant | Pennsylvania |
| 18 | Katherine Mcdonough | 50 | Sister-in-law | — | Pennsylvania |
| 19 | Leo B. Boyle | 43 | Head | Pit Craneman | Pennsylvania |
| 20 | Margaret Boyle | 41 | Wife | — | Pennsylvania |
| 21 | Margaret Boyle | 19 | Daughter | Stenographer | Pennsylvania |
| 22 | Bernard Boyle | 17 | Son | — | Pennsylvania |
| 23 | Evelyn Boyle | 13 | Daughter | — | Pennsylvania |
| 24 | Robert Boyle | 10 | Son | — | Pennsylvania |
| 25 | Leo J. Truckey | 68 | Head | — | Michigan |
| 26 | Joseph J. Truckey | 41 | Son | Laborer | Pennsylvania |
| 27 | Loretta D. Truckey | 38 | Daughter | — | Pennsylvania |
| 28 | Edward Mcmahon | 45 | Head | Laborer | Pennsylvania |
| 29 | Anna Mcmahon | 39 | Wife | — | Ireland |
| 30 | Michael J. Kirsch | 60 | Head | Core Maker | Germany |
| 31 | Katharine Kirsch | 53 | Wife | — | Germany |
| 32 | William Kirsch | 24 | Son | — | Pennsylvania |
| 33 | Edward Kirsch | 22 | Son | Truck Driver | Pennsylvania |
| 34 | James Kirsch | 16 | Son | — | Pennsylvania |
| 35 | Alfred Kirsch | 12 | Son | — | Pennsylvania |
| 36 | Charles Meigs | 38 | Head | Machinist | Pennsylvania |
| 37 | Vera Meigs | 31 | Wife | — | Pennsylvania |
| 38 | Margaret Meigs | 78 | Head | — | Germany |
| 39 | Mary Meigs | 43 | Daughter | Office Clerk | Pennsylvania |
| 40 | Frank B. Jennings | 48 | Head | Fireman | Pennsylvania |
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)