MC
Mary Cronin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Walworth-County, Wisconsin
Our Model Tree links this Mary Cronin across the 1920, 1930 and 1940 US Censuses in Walworth-County, Wisconsin (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 3-person household.
Age 73
b. ~1867
Female
Head
Born: Wisconsin
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Walworth-County, Wisconsin |
| Surname | Cronin |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Geneva Township |
| 1935 Residence (County) | Walworth |
| Additional Details | |
| Occupation | none |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Geneva Township |
| Est. Birth Year | ~1867 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cronin | Head | — | 73 | ~1867 |
| Maria Cronin | Daughter | — | 42 | ~1898 |
| Joseph Cronin | Son | — | 32 | ~1908 |
Census Appearances
1920
Walworth, Wisconsin
Spouse, age 51
Walworth, Wisconsin · implied b. ~1869 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cronin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Walworth, Wisconsin
Other, age 62
Walworth, Wisconsin · implied b. ~1868 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cronin |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Walworth-County, Wisconsin
Head, age 73
Walworth-County, Wisconsin · implied b. ~1867 — 3 household members
| Surname | Cronin |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Geneva Township |
| 1935 Residence (County) | Walworth |
| Occupation | none |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Cronin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Cronin
Head · 1940 · age 73 · b. ~1867 · Wisconsin
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Walworth-County, Wisconsin
Open full size
1940 US Federal Census — Walworth-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04531-00624)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Wesley Wagner | 21 | Hired man | Farm Hand | Wisconsin |
| 42 | Elmer Bagdeler | 36 | Head | Farm Hand | Wisconsin |
| 43 | Rosella Bagdeler | 30 | Wife | None | Wisconsin |
| 44 | Beverly Bagdeler | 10 | Daughter | — | Wisconsin |
| 45 | Kathleen Bagdeler | 2 | Daughter | — | Wisconsin |
| 46 | Eugene Bagdeler | 0 | Son | — | Wisconsin |
| 47 | William O'Donnell | 50 | Head | Farmer | Wisconsin |
| 48 | Elizabeth O'Donnell | 50 | Wife | None | Wisconsin |
| 49 | Margaret O'Donnell | 14 | Daughter | None | Wisconsin |
| 50 | William Wagner | 24 | Hired man | Farm Hand | Wisconsin |
| 51 | Alfred D. Hall | 73 | Head | Farmer | England |
| 52 | Harriet Hall | 73 | Wife | None | Wisconsin |
| 53 | Verl Hall | 21 | Grandson | Farm Hand | Michigan |
| 54 | Jack D. Cody | 51 | Head | Farmer | California |
| 55 | Elizabeth Cody | 39 | Wife | None | Illinois |
| 56 | Robert Cody | 15 | Son | None | Illinois |
| 57 | Virginia Cody | 12 | Daughter | — | Illinois |
| 58 | Philip Lannon | 73 | Head | Farmer | New York |
| 59 | Barbara Lannon | 73 | Wife | None | Canada |
| 60 | William Lannon | 76 | Brother | Farm Hand | Eire |
| 61 | John Lannon | 71 | Brother | Farm Hand | New York |
| 62 | Walter Lasch | 44 | Head | Farmer | Wisconsin |
| 63 | Bernice Lasch | 35 | Wife | None | Wisconsin |
| 64 | Blanche Lasch | 16 | Daughter | None | Wisconsin |
| 65 | Phyllis Lasch | 15 | Daughter | None | Wisconsin |
| 66 | Roma Lasch | 14 | Daughter | None | Wisconsin |
| 67 | Roy Henry | 29 | Head | Operator Grader | Wisconsin |
| 68 | Doris Henry | 26 | Wife | None | Wisconsin |
| 69 | Catherine Waters | 69 | Head | None | Wisconsin |
| 70 | Patrick Waters | 37 | Son | Painter | Wisconsin |
| 71 | Mary Cronin THIS PERSON | 73 | Head | None | Wisconsin |
| 72 | Maria Cronin | 42 | Daughter | None | Wisconsin |
| 73 | Joseph Cronin | 32 | Son | Farmer | Wisconsin |
| 74 | Lars Kalstad | 52 | Head | Farmer | Norway |
| 75 | Lilliane Kalstad | 50 | Wife | None | Illinois |
| 76 | Andrew Maleck | 61 | Head | Mail Carrier | Wisconsin |
| 77 | Mary Maleck | 56 | Wife | None | Wisconsin |
| 78 | John Maleck | 24 | Son | Farmer | Wisconsin |
| 79 | Willard Alther | 21 | Hired man | Farmer | Illinois |
| 80 | Thomas Costello | 58 | Head | Farmer | Eire |
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)