JW
John Welsh — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Delaware, Pennsylvania
Our Model Tree links this John Welsh across the 1930 and 1940 US Censuses in Delaware, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 3-person household.
Age 1
b. ~1929
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Delaware, Pennsylvania |
| Surname | Welsh |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Upper Darby Township Pt |
| Est. Birth Year | ~1929 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Welsh | Head | — | 35 | ~1895 |
| Elizabeth Welsh | Spouse | — | 36 | ~1894 |
| John Welsh | Son | — | 1 | ~1929 |
Census Appearances
1930
Delaware, Pennsylvania
Son, age 1
Delaware, Pennsylvania · implied b. ~1929 — 3 household members
| Surname | Welsh |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Ireland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Son, age 12
Delaware-County, Pennsylvania · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | John J., Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Upper Darby Township |
| 1935 Residence (County) | Delaware |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 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 · 1930 · age 1 · b. ~1929 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Delaware, Pennsylvania
Open full size
1930 US Federal Census — Delaware, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2033:0818)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Dougherty | 30 | Head | Doctor | Pennsylvania |
| 2 | Mary Dougherty | 65 | Mother | — | Pennsylvania |
| 3 | Gertrude Dougherty | 21 | Sister | Technician | Pennsylvania |
| 4 | Hugh Dougherty | 26 | Brother | — | Pennsylvania |
| 5 | George J Bader | 38 | Head | Clerk | Pennsylvania |
| 6 | Anna M Bader | 37 | Wife | — | Pennsylvania |
| 7 | George J Jr Bader | 7 | Son | — | Pennsylvania |
| 8 | Joseph Jones | 59 | Head | Paper Hanger | Pennsylvania |
| 9 | Margaret Jones | 54 | Wife | — | Pennsylvania |
| 10 | Frank G Carr | 36 | Head | Inspector | Pennsylvania |
| 11 | Lila B Carr | 36 | Wife | — | New York |
| 12 | William K Owens | 21 | Roomer | Salesman | Pennsylvania |
| 13 | Harry Cole | 50 | Head | Steel Plate Maker | New York |
| 14 | Isabelle Cole | 47 | Wife | — | England |
| 15 | Harry Jr Cole | 23 | Son | Steel Plate Maker | New York |
| 16 | Alphonse Cole | 11 | Son | — | Maryland |
| 17 | Walter J Neff | 44 | Head | Gas Engineer | Connecticut |
| 18 | Bessie M Neff | 37 | Wife | — | Pennsylvania |
| 19 | Walter J Jr Neff | 14 | Son | — | Massachusetts |
| 20 | Michael Messer | 59 | Head | Officer | Pennsylvania |
| 21 | Catherine Messer | 54 | Wife | — | Pennsylvania |
| 22 | Mildred Messer | 23 | Daughter | — | Pennsylvania |
| 23 | Joseph Messer | 19 | Son | — | Pennsylvania |
| 24 | William Messer | 13 | Son | — | Pennsylvania |
| 25 | William Springer | 30 | Head | Salesman | Pennsylvania |
| 26 | Catherine Springer | 25 | Wife | — | New Jersey |
| 27 | June Springer | 2 | Daughter | — | Pennsylvania |
| 28 | John Welsh | 35 | Head | Mechanic | England |
| 29 | Elizabeth Welsh | 36 | Wife | — | Ireland |
| 30 | John Jr Welsh THIS PERSON | 1 | Son | — | Pennsylvania |
| 31 | Emmet Collom | 34 | Head | Mechanic | Pennsylvania |
| 32 | Anne Collom | 32 | Wife | — | Pennsylvania |
| 33 | Kathryn Collom | 9 | Daughter | — | Pennsylvania |
| 34 | William Collom | 7 | Son | — | Pennsylvania |
| 35 | Ruth Collom | 6 | Daughter | — | Pennsylvania |
| 36 | Doris Collom | 3 | Daughter | — | Pennsylvania |
| 37 | James Shea | 34 | Head | Proprietor | Pennsylvania |
| 38 | Harriet Shea | 32 | Wife | — | Pennsylvania |
| 39 | James Jr Shea | 6 | Son | — | Pennsylvania |
| 40 | Richard Shea | 3 | Son | — | Pennsylvania |
| 41 | Jane Shea | 2 | Daughter | — | Pennsylvania |
| 42 | Howard F Swope | 32 | Head | Clerk | Pennsylvania |
| 43 | Edith Swope | 32 | Wife | — | Pennsylvania |
| 44 | Charles H Carpenter | 37 | Head | Electrotyper | Pennsylvania |
| 45 | Emily Carpenter | 28 | Wife | — | Pennsylvania |
| 46 | James Bonsall | 27 | Head | Manager | Pennsylvania |
| 47 | Margaret Bonsall | 27 | Wife | — | Ireland |
| 48 | Margaret Bonsall | 6 | Daughter | — | Pennsylvania |
| 49 | Charles Boggs | 32 | Head | Accountant | Pennsylvania |
| 50 | Lola Boggs | 27 | Wife | — | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)