JW
John Welsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Morris-County, New Jersey
Our Model Tree links this John Welsh across the 1930 and 1940 US Censuses in Morris-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Morris-County, New Jersey |
| Surname | Welsh |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Madison borough |
| 1935 Residence (County) | Morris |
| Additional Details | |
| Occupation | Clerk |
| Industry | Office |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Clerk |
| Township / Ward | Madison Borough |
| Est. Birth Year | ~1919 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Welsh | Son | — | 21 | ~1919 |
| John Pentony | Other | — | 25 | ~1915 |
| John Welsh | Head | — | 68 | ~1872 |
| Margaret Welsh | Spouse | — | 56 | ~1884 |
| Frank Kenny | Other | — | 42 | ~1898 |
| Rita Pentony | Daughter | — | 26 | ~1914 |
| Catherine Kenny | Daughter | — | 35 | ~1905 |
| Edward Welsh | Son | — | 17 | ~1923 |
Census Appearances
1930
Passaic, New …
Son, age 11
Passaic, New Jersey · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welsh |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Morris-County, New …
Son, age 21
Morris-County, New Jersey · implied b. ~1919 — 8 household members
| Surname | Welsh |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Madison borough |
| 1935 Residence (County) | Morris |
| Occupation | Clerk |
| Industry | Office |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 21 · b. ~1919 · New Jersey
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Sibling
Rita Pentony
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Welsh
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Kenny
Sibling · 1940 · age 35
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 — Morris-County, New Jersey
Open full size
1940 US Federal Census — Morris-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02371-00899)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Bethea | 26 | Head | Painter | North Carolina |
| 2 | Alice Bethea | 26 | Wife | Housework | New Jersey |
| 3 | Herbert Walker | 24 | Head | Laborer | New Jersey |
| 4 | Thelma Walker | 21 | Wife | — | Maryland |
| 5 | Dorthy Hall | 24 | Cousin | Housework | Maryland |
| 6 | John Welsh | 68 | Head | — | Irish Free State |
| 7 | Margaret Welsh | 56 | Wife | — | Irish Free State |
| 8 | John Welsh THIS PERSON | 21 | Son | Clerk | New Jersey |
| 9 | Edward Welsh | 17 | Son | — | New Jersey |
| 10 | Frank Kenny | 42 | Son-in-law | Insurance Agent | New Jersey |
| 11 | Catherine Kenny | 35 | Daughter | — | New Jersey |
| 12 | John Pentony | 25 | Son-in-law | Salesman | New Jersey |
| 13 | Rita Pentony | 26 | Daughter | — | New Jersey |
| 14 | Jennie Redding | 55 | Head | — | New Jersey |
| 15 | Roy Langford | 38 | Head | Attendant | North Carolina |
| 16 | Betty Langford | 30 | Wife | — | North Carolina |
| 17 | Roy Jr Langford | 11 | Son | — | New Jersey |
| 18 | James Langford | 9 | Son | — | New Jersey |
| 19 | Gloria Langford | 7 | Daughter | — | New Jersey |
| 20 | Ines Harrell | 21 | Cousin | — | North Carolina |
| 21 | Alfred Burroughs | 26 | Head | Laborer | New Jersey |
| 22 | Evelyn Burroughs | 22 | Wife | — | New Jersey |
| 23 | Alfred Jr Burroughs | 1 | Son | — | New Jersey |
| 24 | Salvatore Luciano | 67 | Head | — | Italy |
| 25 | Elizabeth Luciano | 70 | Wife | — | Italy |
| 26 | Dominick Luciano | 25 | Son | Laborer | New Jersey |
| 27 | Henry Dawson | 46 | Head | Janitor | New Jersey |
| 28 | Margaret Dawson | 43 | Wife | — | New Jersey |
| 29 | Evelyn Dawson | 16 | Daughter | — | New Jersey |
| 30 | Frank Dawson | 15 | Son | New Worker | New Jersey |
| 31 | Marian Dawson | 14 | Daughter | — | New Jersey |
| 32 | Jane Dawson | 12 | Daughter | — | New Jersey |
| 33 | George Dawson | 11 | Son | — | New Jersey |
| 34 | Betty Dawson | 8 | Daughter | — | New Jersey |
| 35 | Eleanor Dawson | 6 | Daughter | — | New Jersey |
| 36 | Henry Jr Dawson | 4 | Son | — | New Jersey |
| 37 | Harold Dawson | 2 | Son | — | New Jersey |
| 38 | Alice Hogan | 75 | Head | — | New York |
| 39 | Jerry Hogan | 39 | Son | Laborer | New York |
| 40 | James Hogan | 37 | Son | Laborer | New York |
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)