MI
Mary Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Stark-County, Illinois
Our Model Tree links this Mary Irwin across the 1930 and 1940 US Censuses in Stark-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Stark-County, Illinois |
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Wyoming |
| Additional Details | |
| Industry | 0 |
| Highest Grade | Hs 1 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Wyoming |
| Est. Birth Year | ~1925 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Francine Irwin | Daughter | — | 17 | ~1923 |
| Mary Irwin | Daughter | — | 15 | ~1925 |
| Howard Graves | Son | — | 36 | ~1904 |
| T Irwin | Daughter | — | 40 | ~1900 |
| Cora Graves | Spouse | — | 66 | ~1874 |
| Lyman Graves | Head | — | 70 | ~1870 |
Census Appearances
1930
Stark, Illinois
Daughter, age 5
Stark, Illinois · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | Mary W |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Stark-County, Illinois
Daughter, age 15
Stark-County, Illinois · implied b. ~1925 — 6 household members
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Wyoming |
| Industry | 0 |
| Highest Grade | Hs 1 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Irwin
Daughter · 1940 · age 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
T Irwin
Sibling · 1940 · age 40
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francine Irwin
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Graves
Sibling · 1940 · age 36
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 — Stark-County, Illinois
Open full size
1940 US Federal Census — Stark-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00891-00048)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen Graham | 36 | Daughter | Contractor | Germany |
| 42 | Fred Mesker | 55 | Son-in-law | Laborer | Germany |
| 43 | Wesley Jungling | 24 | Lodger | Attendant | Illinois |
| 44 | John Bear | 34 | Lodger | Machinist | Illinois |
| 45 | Virginia Bradshaw | 12 | Granddaughter | — | California |
| 46 | Lawrence Brinnen | 47 | Head | Laborer | Illinois |
| 47 | Violet Brinnen | 36 | Wife | — | Missouri |
| 48 | John R. Brinnen | 15 | Son | — | Illinois |
| 49 | Don Brinnen | 12 | Son | — | Illinois |
| 50 | James Brinnen | 10 | Son | — | Illinois |
| 51 | Charles Brinnen | 9 | Son | — | Illinois |
| 52 | Doris Brinnen | 7 | Daughter | — | Illinois |
| 53 | Carl Brinnen | 3 | Son | — | Illinois |
| 54 | Gerald Brinnen | 1 | Son | — | Illinois |
| 55 | Helene Brinnen | 23 | Daughter | — | Illinois |
| 56 | Thomas Miller | 68 | Head | House Repair | Iowa |
| 57 | Lora Miller | 68 | Wife | Agent | Illinois |
| 58 | Ellsworth Clark | 67 | Head | Agent | Pennsylvania |
| 59 | Cora Clark | 65 | Wife | — | Illinois |
| 60 | Annie Bailey | 69 | Head | — | Ohio |
| 61 | Edgar P. Reeder | 72 | Head | — | Illinois |
| 62 | Nellie Reeder | 63 | Wife | — | Illinois |
| 63 | Lyman Graves | 70 | Head | Mayor | Illinois |
| 64 | Cora Graves | 66 | Wife | — | Illinois |
| 65 | Howard Graves | 36 | Son | Mail Carrier | Illinois |
| 66 | T. Marion Irwin | 40 | Daughter | Telephone Operator | Illinois |
| 67 | Francine Irwin | 17 | Daughter | — | Illinois |
| 68 | Mary Irwin THIS PERSON | 15 | Daughter | — | Illinois |
| 69 | Annie L. Murray | 76 | Head | — | Illinois |
| 70 | Ruth Murray | 41 | Daughter | Teacher | Illinois |
| 71 | Christina Hochstrasser | 74 | Cousin | — | Illinois |
| 72 | John Albrecht | 72 | Head | Attendant | Illinois |
| 73 | Margaret Albrecht | 52 | Wife | — | Iowa |
| 74 | Patricia A. Albrecht | 9 | Daughter | — | Illinois |
| 75 | John Soggy | 24 | Head | Meat Cutter | Illinois |
| 76 | Mildred Soggy | 21 | Wife | — | Illinois |
| 77 | Peggy Ann Soggy | 2 | Daughter | — | Illinois |
| 78 | Billy Soggy | 1 | Son | — | Illinois |
| 79 | Walter Soggy | 0 | Son | — | Illinois |
| 80 | Edward Blakey | 22 | Head | Miner | Illinois |
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)