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William Welsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this William Welsh across the 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 5-person household.
Age 18
b. ~1922
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Welsh |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Hours Worked | 8 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1922 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Louise Welsh | Spouse | — | 51 | ~1889 |
| Edward Welsh | Son | — | 22 | ~1918 |
| Martin Welsh | Head | — | 51 | ~1889 |
| Esther Welsh | Daughter | — | 20 | ~1920 |
| William Welsh | Son | — | 18 | ~1922 |
Census Appearances
1930
Mercer, New …
Son, age 8
Mercer, New Jersey · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Son, age 18
Mercer-County, New Jersey · implied b. ~1922 — 5 household members
| Surname | Welsh |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Hours Worked | 8 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 William Welsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Welsh
Son · 1940 · age 18 · b. ~1922 · New Jersey
★ You are viewing this record
Sibling
Edward Welsh
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther Welsh
Sibling · 1940 · age 20
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 — Mercer-County, New Jersey
Open full size
1940 US Federal Census — Mercer-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02434-00092)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rose De Angelo | 32 | sister | — | New Jersey |
| 2 | Josephine Carcara | 31 | niece | Waitress | New Jersey |
| 3 | Francis De Angelo | 1 | nephew | — | New Jersey |
| 4 | Simon Rosenthal | 49 | head | Shoe Repairer | Poland |
| 5 | Fanny F. Rosenthal | 45 | wife | — | Russia |
| 6 | Edith Rosenthal | 22 | daughter | Saleslady | New Jersey |
| 7 | Irving Rosenthal | 15 | son | — | New Jersey |
| 8 | Abe Rothman | 39 | head | Office Worker | Russia |
| 9 | Lillian Rothman | 37 | wife | — | New York |
| 10 | Barbara Rothman | 4 | daughter | — | New York |
| 11 | Margaret Mullings | 44 | head | Nurse | New Jersey |
| 12 | Margaret Byer | 24 | daughter | Salesgirl | New Jersey |
| 13 | Alice Tafe | 39 | head | — | New Jersey |
| 14 | Matilda Tafe | 46 | sister | — | New Jersey |
| 15 | Nan Tafe | 23 | niece | Waitress | New Jersey |
| 16 | William Tafe | 21 | nephew | Roofer | New Jersey |
| 17 | Loretta Isher | 24 | head | Elevator Oper. | New Jersey |
| 18 | Loretta Isher | 5 | daughter | — | New Jersey |
| 19 | Richard Isher | 3 | son | — | New Jersey |
| 20 | Joseph Muni | 23 | son in law | Rubber Worker | New Jersey |
| 21 | Elizabeth A. Muni | 17 | sister | — | New Jersey |
| 22 | Joan Muni | 0 | niece | — | New Jersey |
| 23 | Andrew P. Bock | 43 | head | Brakeman | Austria |
| 24 | Mary Bock | 40 | wife | — | Ohio |
| 25 | Edward R. Bock | 14 | son | — | New Jersey |
| 26 | Andrew Jr. Bock | 9 | son | — | New Jersey |
| 27 | John G. Gura | 38 | head | Laborer | New Jersey |
| 28 | Margaret Gura | 19 | wife | — | New Jersey |
| 29 | John Jr. Gura | 0 | son | — | New Jersey |
| 30 | Veronica Brown | 50 | head | — | Poland |
| 31 | James M. Banks | 34 | boarder | Packer | New Jersey |
| 32 | Stephen Schuchardt | 45 | boarder | Helper | New Jersey |
| 33 | Henry Maloy | 31 | boarder | Switchman | New Jersey |
| 34 | Steven Saunders | 21 | boarder | Rubber Worker | New Jersey |
| 35 | Mis- Informed | None | — | — | — |
| 36 | Martin Welsh | 51 | head | Iron Worker | New Jersey |
| 37 | Louise A. Welsh | 51 | wife | — | Penna |
| 38 | Edward F. Welsh | 22 | son | Iron Worker | New Jersey |
| 39 | Esther Welsh | 20 | daughter | Drophire Girl | New Jersey |
| 40 | William Welsh THIS PERSON | 18 | son | — | New Jersey |
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)