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Thomas Welch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clark-County, Ohio
Our Model Tree links this Thomas Welch across the 1930 and 1940 US Censuses in Clark-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 11-person household.
Age 12
b. ~1928
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clark-County, Ohio |
| Surname | Welch |
| Given Name | Thomas P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same house |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Springfield |
| Est. Birth Year | ~1928 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| William Welch | Son | — | 16 | ~1924 |
| Raymond Welch | Son | — | 24 | ~1916 |
| Martin Welch | Head | — | 56 | ~1884 |
| Thomas Welch | Son | — | 12 | ~1928 |
| Rosetta Welch | Daughter | — | 6 | ~1934 |
| Mary Welch | Spouse | — | 51 | ~1889 |
| Helen Welch | Daughter | — | 21 | ~1919 |
| Carolyn Welch | Daughter | — | 14 | ~1926 |
| Alice Welch | Daughter | — | 22 | ~1918 |
| John Welch | Son | — | 10 | ~1930 |
| Patricia Welch | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Clark, Ohio
Son, age 2
Clark, Ohio · implied b. ~1928 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | Thomas P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Clark-County, Ohio
Son, age 12
Clark-County, Ohio · implied b. ~1928 — 11 household members
| Surname | Welch |
| Given Name | Thomas P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Clark |
| Highest Grade | 5 |
| 1935 Residence | Same house |
| 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 Thomas Welch across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Welch
Son · 1940 · age 12 · b. ~1928 · Ohio
★ You are viewing this record
Sibling
Alice Welch
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carolyn Welch
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Welch
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Welch
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Welch
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosetta Welch
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Welch
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Welch
Sibling · 1940 · age 24
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 — Clark-County, Ohio
Open full size
1940 US Federal Census — Clark-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03039-00110)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dennis Lozinik | 1 | Grandson | — | Ohio |
| 42 | John Clark | 32 | Head | Motor Truck | Iowa |
| 43 | Helen Clark | 28 | Wife | — | Ohio |
| 44 | Ann Dolores Clark | 2 | Daughter | — | Ohio |
| 45 | Mary K. Clark | 1 | Daughter | — | Ohio |
| 46 | Martin R. Welch | 56 | Head | Laborer | Ohio |
| 47 | Mary Welch | 51 | Wife | — | Ohio |
| 48 | Raymond A. Welch | 24 | Son | Lineman | Ohio |
| 49 | Alice Welch | 22 | Daughter | Stenographer | Ohio |
| 50 | Helen Welch | 21 | Daughter | Sales Clerk | Ohio |
| 51 | Patricia Welch | 18 | Daughter | — | Ohio |
| 52 | William Welch | 16 | Son | — | Ohio |
| 53 | Carolyn Welch | 14 | Daughter | — | Ohio |
| 54 | Thomas P. Welch THIS PERSON | 12 | Son | — | Ohio |
| 55 | John Welch | 10 | Son | — | Ohio |
| 56 | Rosetta Ann Welch | 6 | Daughter | — | Ohio |
| 57 | Nelle Powers | 64 | Head | — | Ohio |
| 58 | Reed Park | 65 | Head | — | Ohio |
| 59 | Laura Park | 62 | Wife | — | Ohio |
| 60 | Grace Hyer | 39 | Head | Operator | Ohio |
| 61 | Texa Hyer | 70 | Mother | — | Ohio |
| 62 | Hubert Copen | 36 | Head | Molder | Kentucky |
| 63 | Ruth Copen | 33 | Wife | Stitcher | Ohio |
| 64 | Hubert Jr. Copen | 13 | Son | — | Ohio |
| 65 | Jerry Lee Copen | 3 | Son | — | Ohio |
| 66 | Ends Block 210 """Here" | 211 | and | — | — |
| 67 | John Hyer | 42 | Head | Locomotive Fireman | Ohio |
| 68 | Thelma Hyer | 37 | Wife | — | Ohio |
| 69 | Jacqueline Hyer | 15 | Daughter | — | Ohio |
| 70 | Patricia Hyer | 13 | Daughter | — | Ohio |
| 71 | Joann Hyer | 11 | Daughter | — | Ohio |
| 72 | William E. Hyer | 9 | Son | — | Ohio |
| 73 | Robert E. Hyer | 7 | Son | — | Ohio |
| 74 | Roberta Hyer | 4 | Daughter | — | Ohio |
| 75 | Leo R. Ryan | 35 | Head | Laborer | Ohio |
| 76 | Edna L. Ryan | 27 | Wife | — | Ohio |
| 77 | Lorna L. Ryan | 7 | Daughter | — | Ohio |
| 78 | Doris J. Ryan | 5 | Daughter | — | Ohio |
| 79 | Leo Richard Ryan | 4 | Son | — | Ohio |
| 80 | William A. Ryan | 1 | Son | — | Ohio |
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)