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William Welsh — 1930 US Census Record
Model Tree available1930 United States Federal Census · New Castle, Delaware
Our Model Tree links this William Welsh across the 1910, 1920 and 1930 US Censuses in New Castle, Delaware (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a head (b.~1901), then head of a 7-person household.
Age 29
b. ~1901
Male
Head
Born: Connecticut
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | New Castle, Delaware |
| Surname | Welsh |
| Given Name | William A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Connecticut |
| Age at First Marriage | 18 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | N. Indiana |
| Additional Details | |
| Occupation | Accountant |
| Industry | Chemical Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
| Occupation | Accountant |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1901 |
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 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mildred Welsh | Daughter | — | 9 | ~1921 |
| Elenor Welsh | Daughter | — | 10 | ~1920 |
| William Welsh | Son | — | 6 | ~1924 |
| Lois Welsh | Daughter | — | 2 | ~1928 |
| Audrey Welsh | Daughter | — | 4 | ~1926 |
| William Welsh | Head | — | 29 | ~1901 |
| Matilda Welsh | Other | — | 32 | ~1898 |
Census Appearances
1910
New Castle, …
Son, age 9
New Castle, Delaware · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welsh |
| Given Name | William A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Connecticut |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1920
New Castle, …
Son, age 19
New Castle, Delaware · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welsh |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Connecticut |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Occupation | Clerk |
| Industry | Chemical Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1930
New Castle, …
Head, age 29
New Castle, Delaware · implied b. ~1901 — 7 household members
| Surname | Welsh |
| Given Name | William A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Connecticut |
| Age at First Marriage | 18 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | N. Indiana |
| Occupation | Accountant |
| Industry | Chemical Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
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 3 US Census years (1910, 1920 and 1930) in New Castle, Delaware, using XGBoost record linkage. Identified parents: father Thomas Welsh (~0.92 confidence) and father Thomas Welsh (~0.92 confidence) and mother Anna Welsh (~0.92 confidence) and mother Bridget Welsh (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Welsh
b. ~1856
Source father
● Household
· direct · ~0.92
Father
Thomas Welsh
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Anna Welsh
b. ~1859
Source mother
● Household
· direct · ~0.92
Mother
Bridget Welsh
b. ~1859
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Welsh
Head · 1930 · age 29 · b. ~1901 · Delaware
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — New Castle, Delaware
Open full size
1930 US Federal Census — New Castle, Delaware
Page Contents
50 people indexed on this census page (ia:1930:15thcensus289unit:0970)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred A. Smith | 12 | Daughter | None | Delaware |
| 2 | Leslie G. Smith | 11 | Son | None | Delaware |
| 3 | Charles L. Smith | 9 | Son | None | Delaware |
| 4 | Daniel Gross | 35 | Head | Moulder | Italy |
| 5 | Nellie M. Gross | 32 | Wife-H | None | Delaware |
| 6 | Annie Gross | 17 | — | None | Delaware |
| 7 | Antonio Fredda | 58 | Head | Laborer | Italy |
| 8 | Donetta Fredda | 54 | Wife-H | None | Italy |
| 9 | Rita Sardano | 21 | Daughter | None | Italy |
| 10 | Anthony Sardano | 23 | Son in law | Laborer | Pennsylvania |
| 11 | Patsy Sardano | 2 | Grand-daughter | None | Delaware |
| 12 | Lewis Fredda | 10 | Son | None | Delaware |
| 13 | George Schmidt | 33 | Head | Layer In | Delaware |
| 14 | Bertha Schmidt | 28 | Wife-H | Baker | Maryland |
| 15 | Marie Schmidt | 61 | Mother | None | Germany |
| 16 | Angelo Pellegrini | 34 | Head | Laborer | Italy |
| 17 | Mary Pellegrini | 24 | Wife-H | None | Italy |
| 18 | Angelo Jr. Pellegrini | 7 | Son | None | Delaware |
| 19 | Anthony Pellegrini | 3 | Son | None | Delaware |
| 20 | James Aiello | 38 | Head | Teacher Of Music | Italy |
| 21 | Mary Aiello | 27 | Wife-H | None | New York |
| 22 | Albert Aiello | 2 | Son | None | Delaware |
| 23 | John De Voe | 50 | Head | Stockkeeper | Pennsylvania |
| 24 | Ada De Voe | 54 | Wife-H | None | Maryland |
| 25 | W. Franklin De Voe | 10 | Son | None | Delaware |
| 26 | Edward M. Webster | 21 | Stepson | Laborer | Maryland |
| 27 | William A. Welsh THIS PERSON | 29 | Head | Accountant | Connecticut |
| 28 | Matilda S. Welsh | 32 | Wife-H | None | Delaware |
| 29 | Elenor Welsh | 10 | Daughter | None | Delaware |
| 30 | Mildred Welsh | 9 | Daughter | None | Delaware |
| 31 | William Welsh | 6 | Son | None | Delaware |
| 32 | Audrey Welsh | 4 | Daughter | None | Delaware |
| 33 | Lois Welsh | 2 | Daughter | None | Delaware |
| 34 | Horace G. Burns | 60 | Head | Guard | Pennsylvania |
| 35 | Annie E. Burns | 60 | Wife-H | None | Pennsylvania |
| 36 | Eloise M. Burns | 26 | Daughter | Stenographer | Delaware |
| 37 | Herman Weihmuller | 58 | Brother-in-law | Tacker | Pennsylvania |
| 38 | George G. Ballinger | 51 | Head | Beaming-R | Delaware |
| 39 | Anka A. Ballinger | 72 | Mother-H | None | Delaware |
| 40 | Catherine E. Ballinger | 42 | Sister | Teacher Of | Delaware |
| 41 | August Kiziluka | 55 | Head | Night Watch | Delaware |
| 42 | Mary J. Hagerty | 49 | Head | Assorter | Delaware |
| 43 | Nora Hagerty | 50 | Wife-H | None | Delaware |
| 44 | Doris Hagerty | 4 | Daughter | None | Delaware |
| 45 | Daniel Murphy | 49 | Boarder | Textile Worker | Delaware |
| 46 | Daniel G. Murphy | 24 | Boarder | Textile Worker | Delaware |
| 47 | Meryl P. Murphy | 18 | Boarder | Textile Worker | Delaware |
| 48 | Joseph Catalano | 44 | Head | Stone Mason | Italy |
| 49 | Marguerite Catalano | 38 | Wife-H | None | Italy |
| 50 | William Catalano | 17 | Son | Brick Layer | Italy |
Pedigree Summary
William
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)