MW
Mary Welsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Preble-County, Ohio
Our Model Tree links this Mary Welsh across the 1930 and 1940 US Censuses in Preble-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 5-person household.
Age 17
b. ~1923
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Preble-County, Ohio |
| Surname | Welsh |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | EATON |
| 1935 Residence (County) | PREBLE |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Eaton |
| Est. Birth Year | ~1923 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Pearl Welsh | Spouse | — | 57 | ~1883 |
| William Welsh | Son | — | 20 | ~1920 |
| Samuel Welsh | Head | — | 57 | ~1883 |
| Cecil Welsh | Son | — | 23 | ~1917 |
| Mary Welsh | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Preble, Ohio
Daughter, age 7
Preble, Ohio · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welsh |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Preble-County, Ohio
Daughter, age 17
Preble-County, Ohio · implied b. ~1923 — 5 household members
| Surname | Welsh |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | EATON |
| 1935 Residence (County) | PREBLE |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| 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 Mary Welsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Welsh
Daughter · 1940 · age 17 · b. ~1923 · Ohio
★ You are viewing this record
Sibling
William Welsh
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecil Welsh
Sibling · 1940 · age 23
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 — Preble-County, Ohio
Open full size
1940 US Federal Census — Preble-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03132-00631)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dale Cass | 18 | Son | Salesman | Ohio |
| 42 | Norman O'Dwyer | 25 | Head | Salesman | Ohio |
| 43 | Treva O'Dwyer | 23 | Wife | Clerk | Kentucky |
| 44 | Frank H. Baker | 45 | Head | Mechanic | Connecticut |
| 45 | Alice M. Baker | 45 | Wife | — | Ohio |
| 46 | Frances Baker | 19 | Daughter | — | Ohio |
| 47 | Martha Baker | 16 | Daughter | — | Ohio |
| 48 | Charles Warner | 51 | Head | Fertilizer Salesman | Ohio |
| 49 | Emma Warner | 55 | Wife | Co-Owner | Ohio |
| 50 | Lillian Agnor | 50 | Head | Ham Stitching | Maryland |
| 51 | Joseph E. Karch | 50 | Head | Proprietor | Ohio |
| 52 | Dora Karch | 50 | Lodger | — | Ohio |
| 53 | Robert Arton | 21 | Head | Meat Cutter | Ohio |
| 54 | Betty Arton | 19 | Wife | — | Indiana |
| 55 | Henry Aukerman | 71 | Head | Cream Station Manager | Indiana |
| 56 | Harold Aukerman | 45 | Son | Owner | Indiana |
| 57 | Mary Aukerman | 47 | Daughter | — | Ohio |
| 58 | Joseph Wolfrey | 24 | Head | Truck Driver | Ohio |
| 59 | Edmina Wolfrey | 25 | Wife | Clerk | Indiana |
| 60 | Charles E. Newbold | 45 | Head | Physician | Ohio |
| 61 | Bertha Newbold | 40 | Wife | — | Indiana |
| 62 | Janice Newbold | 13 | Daughter | — | Indiana |
| 63 | Irma Deem | 43 | Head | — | Ohio |
| 64 | Josephine Deem | 14 | Daughter | — | Ohio |
| 65 | Maxine Deem | 14 | Daughter | — | Ohio |
| 66 | Linden Emerick | 67 | Head | Physician | Illinois |
| 67 | Ora Emerick | 58 | Wife | — | Kentucky |
| 68 | George Emerick | 53 | Lodger | — | Wisconsin |
| 69 | Samuel Welsh | 57 | Head | Truck Driver | Ohio |
| 70 | Pearl Welsh | 57 | Wife | Supervisor | Ohio |
| 71 | Cecil Welsh | 23 | Son | Bookkeeper | Ohio |
| 72 | William Welsh | 20 | Son | — | Ohio |
| 73 | Mary Jane Welsh THIS PERSON | 17 | Daughter | — | Ohio |
| 74 | Clive Spitler | 40 | Head | Owner | Ohio |
| 75 | Wilma Spitler | 40 | Wife | — | Ohio |
| 76 | Barbara Spitler | 5 | Daughter | — | Ohio |
| 77 | Nancy Spitler | 1 | Daughter | — | Ohio |
| 78 | Herman Davis | 45 | Head | Bus Foreman | Ohio |
| 79 | Opal Davis | 27 | Wife | Glove Maker | Ohio |
| 80 | Donna Davis | 7 | Daughter | — | Ohio |
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)