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William Welsh — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Montgomery, Ohio
Our Model Tree links this William Welsh across the 1930 and 1940 US Censuses in Montgomery, Ohio (XGBoost, ~Confirmed) — first a son (b.~1912), then head of a 7-person household.
Age 18
b. ~1912
Male
Son
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Montgomery, Ohio |
| Surname | Welsh |
| Given Name | William W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Salesman |
| Industry | Clothing |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Salesman |
| Township / Ward | City Of Dayton |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| Bessie Welsh | Spouse | — | 47 | ~1883 |
| Martin Welsh | Son | — | 17 | ~1913 |
| Margaret Welsh | Daughter | — | 7 | ~1923 |
| Thomas Welsh | Son | — | 21 | ~1909 |
| Thomas Welsh | Head | — | 45 | ~1885 |
| William Welsh | Son | — | 18 | ~1912 |
| Robert Welsh | Son | — | 12 | ~1918 |
Census Appearances
1930
Montgomery, Ohio
Son, age 18
Montgomery, Ohio · implied b. ~1912 — 7 household members
| Surname | Welsh |
| Given Name | William W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Salesman |
| Industry | Clothing |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Montgomery-County, Ohio
Son, age 28
Montgomery-County, Ohio · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | William W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton |
| 1935 Residence (County) | Montgomery |
| Occupation | Salesman |
| Industry | Shoe Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 260 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same home |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 · 1930 · age 18 · b. ~1912 · Ohio
★ You are viewing this record
Sibling
Martin Welsh
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Welsh
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Welsh
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Welsh
Sibling · 1930 · age 7
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
1930 US Federal Census — Montgomery, Ohio
Open full size
1930 US Federal Census — Montgomery, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1854:0137)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gordon W. Barnet | 39 | Head | Salesman | Ohio |
| 2 | Martha M. Barnet | 32 | Wife | — | Germany |
| 3 | Gordon W. Jr. Barnet | 7 | Son | — | Ohio |
| 4 | William T. Thorne | 56 | Head | Electrician | Ohio |
| 5 | Nellie B. Thorne | 50 | Wife | — | Ohio |
| 6 | William H. Thorne | 17 | Son | — | Ohio |
| 7 | Walter F. Ehrig | 36 | Head | Merchant | Ohio |
| 8 | Gladys C. Ehrig | 31 | Wife | — | Ohio |
| 9 | Guy L. Antrim | 35 | Head | Manufacturer | Indiana |
| 10 | Elizabeth F. Antrim | 34 | Wife | — | Ohio |
| 11 | Guy L. Jr. Antrim | 13 | Son | — | Indiana |
| 12 | Sylvia Jean Antrim | 10 | Daughter | — | Indiana |
| 13 | Harry J. Van Warren | 48 | Head | Factory Supt. | Penn |
| 14 | Irene A. Van Warren | 40 | Wife | — | Ohio |
| 15 | Richard J. Van Warren | 11 | Son | — | Penn |
| 16 | Mary C. Van Warren | 8 | Daughter | — | Penn |
| 17 | Eleanor J. Van Warren | 3 | Daughter | — | Ohio |
| 18 | Charles A. Cotterman | 50 | Head | Salesman | Ohio |
| 19 | Fanny W. Cotterman | 49 | Wife | — | Ohio |
| 20 | Charles W. Cotterman | 15 | Son | — | Ohio |
| 21 | Leroy Grey | 54 | Head | Gen. Contractor | Ohio |
| 22 | Frances A. Grey | 53 | Wife | — | Virginia |
| 23 | Richard S. Grey | 28 | Son | Musician | Ohio |
| 24 | Doris A. Grey | 24 | Daughter | Teacher | Ohio |
| 25 | George A. Grey | 22 | Son | Inspector | Ohio |
| 26 | Frederick A. Grey | 20 | Son | Clerical | Ohio |
| 27 | Kenneth S.R. Grey | 16 | Son | — | Ohio |
| 28 | Elmira J. Anderson | 78 | Mother-in-law | — | Penn |
| 29 | Thomas T. Welsh | 45 | Head | Asst. Commissary | Irish Free State |
| 30 | Bessie Welsh | 47 | Wife | — | Irish Free State |
| 31 | Thomas J. Welsh | 21 | Son | Salesman | Ohio |
| 32 | William W. Welsh THIS PERSON | 18 | Son | Salesman | Ohio |
| 33 | Martin J. Welsh | 17 | Son | — | Ohio |
| 34 | Robert E. Welsh | 12 | Son | — | Ohio |
| 35 | Margaret M. Welsh | 7 | Daughter | — | Ohio |
| 36 | Edwin Forest Johnson | 55 | Head | Freight Agent | Ohio |
| 37 | Sulu E. Johnson | 50 | Wife | — | Ohio |
| 38 | Sumner H. Jarvis | 50 | Head | Accountant | New York |
| 39 | Alice M. Jarvis | 47 | Wife | — | New York |
| 40 | Charles H. Swartz | 45 | Head | Salesman | Michigan |
| 41 | Harriet B. Swartz | 48 | Wife | — | Ohio |
| 42 | Dorothy Swartz | 18 | Daughter | Comptometer | Michigan |
| 43 | Mildred Swartz | 12 | Daughter | — | Michigan |
| 44 | William F. Mooney | 58 | Head | Salesman | Maryland |
| 45 | Edith Mooney | 48 | Wife | — | Ohio |
| 46 | Wilma Mooney | 26 | Daughter | Bookkeeper | Ohio |
| 47 | John H. Mooney | 17 | Son | — | Ohio |
| 48 | Mary Jane Mooney | 11 | Daughter | — | Ohio |
| 49 | William F. Jr. Mooney | 8 | Son | — | Ohio |
| 50 | Charles A. Kline | 66 | Head | Deputy Treasurer | Ohio |
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)