MI
Mary Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Shawnee-County, Kansas
Our Model Tree links this Mary Irwin across the 1930 and 1940 US Censuses in Shawnee-County, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Shawnee-County, Kansas |
| Surname | Irwin |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Topeka City |
| 1935 Residence (County) | Shawnee |
| Additional Details | |
| Hours Worked | 56 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Topeka City |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Mary Irwin | Daughter | — | 22 | ~1918 |
| Elizabeth Mccord | Daughter | — | 31 | ~1909 |
| Jacquelyn Mcadow | Other | — | 17 | ~1923 |
| Eva Irwin | Spouse | — | 64 | ~1876 |
| J Irwin | Head | — | 65 | ~1875 |
| Helen Deines | Daughter | — | 40 | ~1900 |
Census Appearances
1930
Shawnee, Kansas
Daughter, age 12
Shawnee, Kansas · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | Mary J. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Shawnee-County, Kansas
Daughter, age 22
Shawnee-County, Kansas · implied b. ~1918 — 6 household members
| Surname | Irwin |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Topeka City |
| 1935 Residence (County) | Shawnee |
| Hours Worked | 56 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 22 · b. ~1918 · Kansas
★ You are viewing this record
Sibling
Helen Deines
Sibling · 1940 · age 40
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mccord
Sibling · 1940 · age 31
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 — Shawnee-County, Kansas
Open full size
1940 US Federal Census — Shawnee-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01261-00272)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald Lee Brunnett | 9 | Son | — | Kansas |
| 2 | June Swindell | 21 | Sister-in-law | Phone Operator | Nebraska |
| 3 | Alicia (X) Bennett | 68 | Head | Housewife | Illinois |
| 4 | J. E. Irwin | 65 | Head | Mechanic | Kansas |
| 5 | Eva Irwin | 64 | Wife | Housewife | Kansas |
| 6 | Mary Jane Irwin THIS PERSON | 22 | Daughter | — | Kansas |
| 7 | Helen Deines | 40 | Daughter | Comptometer | Kansas |
| 8 | Jacquelyn Lee Mcadow | 17 | Granddaughter | — | Kansas |
| 9 | Elizabeth Mccord | 31 | Daughter | Housewife | Kansas |
| 10 | S. M. Condon | 65 | Head | Harness Maker | Kansas |
| 11 | Grace (X) Condon | 54 | Wife | Housewife | Kansas |
| 12 | R. B. Hoffman | 33 | Son-in-law | Pharmacist | Kansas |
| 13 | Mamie Hoffman | 34 | Daughter | Binder | Kansas |
| 14 | Francis Stone | 44 | Head | Salesman | Missouri |
| 15 | Ella May (X) Stone | 35 | Wife | Housewife | Iowa |
| 16 | Frances Stone | 17 | Daughter | — | Kansas |
| 17 | John Merrill Stone | 15 | Son | — | Kansas |
| 18 | O. C. Dierks | 74 | Head | Retired | Virginia |
| 19 | Orville Dierks | 38 | Son | Clerk | Missouri |
| 20 | Dan Carpenter | 39 | Head | Trucker | Kansas |
| 21 | Bertha Carpenter | 36 | Wife | Housewife | Kansas |
| 22 | Nellie Mccarthy | 67 | Head | Housewife | New York |
| 23 | Catherine Mccarthy | 42 | Daughter | Housekeeper | Missouri |
| 24 | William Rew | 47 | Head | Mechanic | Indiana |
| 25 | Mary (X) Rew | 47 | Wife | Housewife | Indiana |
| 26 | Dale Rew | 18 | Son | — | Kansas |
| 27 | Lois May (Ab) Rew | 14 | Daughter | — | Kansas |
| 28 | Charles Miller | 39 | Head | Comptometer | Kansas |
| 29 | Winnifred Miller | 34 | Wife | Housewife | Kansas |
| 30 | James Robert Miller | 11 | Son | — | Kansas |
| 31 | Patricia Miller | 9 | Daughter | — | Kansas |
| 32 | Barbara L. Miller | 6 | Daughter | — | Kansas |
| 33 | R. A. Preston | 35 | Head | Salesman | Missouri |
| 34 | Lucile (X) Preston | 32 | Wife | Housewife | North Dakota |
| 35 | Margret (X) Krause | 74 | Head | Retired | Kansas |
| 36 | Paul M. Smith | 41 | Head | Service Man | Tennessee |
| 37 | Velma (X) Smith | 32 | Wife | Housewife | Missouri |
| 38 | Joanne Smith | 15 | Daughter | — | Missouri |
| 39 | Paul Cecil Smith | 13 | Son | — | Missouri |
| 40 | Matilda (X) Dickhaut | 79 | Head | Housewife | Sweden |
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)