MT
Mary Tierney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Aitkin-County, Minnesota
Our Model Tree links this Mary Tierney across the 1930 and 1940 US Censuses in Aitkin-County, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 7-person household.
Age 55
b. ~1885
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Aitkin-County, Minnesota |
| Surname | Tierney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Some house |
| 1935 Residence (County) | Some house |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Aitkin Village |
| Est. Birth Year | ~1885 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Tierney | Daughter | — | 18 | ~1922 |
| Thomas Tierney | Son | — | 14 | ~1926 |
| Catherine Tierney | Daughter | — | 16 | ~1924 |
| James Tierney | Head | — | 57 | ~1883 |
| Ruth Tierney | Daughter | — | 20 | ~1920 |
| Mary Tierney | Spouse | — | 55 | ~1885 |
| Thomas Tierney | Son | — | 22 | ~1918 |
Census Appearances
1930
Aitkin, Minnesota
Spouse, age 45
Aitkin, Minnesota · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tierney |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 29 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Aitkin-County, Minnesota
Spouse, age 55
Aitkin-County, Minnesota · implied b. ~1885 — 7 household members
| Surname | Tierney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Some house |
| 1935 Residence (County) | Some house |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Tierney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Tierney
Spouse · 1940 · age 55 · b. ~1885 · Minnesota
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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 — Aitkin-County, Minnesota
Open full size
1940 US Federal Census — Aitkin-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01903-00071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Donna Jean Mcfarlane | 7 | Daughter | — | Minnesota |
| 42 | Alvin Mcfarlane | 5 | Son | — | Minnesota |
| 43 | Charles A. Wolf | 70 | Head | Salesman | Illinois |
| 44 | Julia Deming | 75 | Head | Practical Nurse | Wisconsin |
| 45 | Victor Erickson | 47 | Head | Office Work | Minnesota |
| 46 | Anna Erickson | 46 | Wife | — | Michigan |
| 47 | Victor Erickson | 23 | Son | — | Minnesota |
| 48 | Mary Jane Erickson | 13 | Daughter | — | Minnesota |
| 49 | Mary E. Lowrey | 74 | Mother-in-law | — | Wisconsin |
| 50 | Jacob J. Hegerle | 46 | Head | Butcher | Minnesota |
| 51 | Aurilla Hegerle | 42 | Wife | — | Minnesota |
| 52 | Ione Hegerle | 19 | Daughter | New Worker | Minnesota |
| 53 | Lauren Hegerle | 18 | Son | New Worker | Minnesota |
| 54 | Cyril Hegerle | 16 | Son | — | Minnesota |
| 55 | Betty Hegerle | 15 | Daughter | — | Minnesota |
| 56 | Joseph Jr. Hegerle | 13 | Son | — | Minnesota |
| 57 | Joyce Hegerle | 5 | Daughter | — | Minnesota |
| 58 | Carol Hegerle | 3 | Daughter | — | Minnesota |
| 59 | Nick Kaukis | 65 | Head | Owner | Greece |
| 60 | Helen Kaukis | 37 | Wife | — | Greece |
| 61 | Gust Trakeris | 40 | Brother | Salesman | Greece |
| 62 | Caroline Goerner | 24 | Head | Part Owner | Minnesota |
| 63 | Isadore Mockler | 49 | Partner | Part Owner | Wisconsin |
| 64 | William C. Kopp | 40 | Head | Bar Tender | Minnesota |
| 65 | Emma Kopp | 40 | Wife | — | Minnesota |
| 66 | William Kopp | 18 | Son | Printer | Minnesota |
| 67 | James Kopp | 16 | Son | — | Minnesota |
| 68 | Richard Kopp | 15 | Son | — | Minnesota |
| 69 | La Donna Kopp | 4 | Daughter | — | Minnesota |
| 70 | George Kopp | 81 | Head | — | Minnesota |
| 71 | Marceline Kopp | 63 | Wife | Makes Doughnuts | Canada Eng |
| 72 | James Tierney | 57 | Head | Engineer | Irish Free State |
| 73 | Mary Tierney THIS PERSON | 55 | Wife | — | Minnesota |
| 74 | Thomas Tierney | 22 | Son | Salesman | Minnesota |
| 75 | Ruth Tierney | 20 | Daughter | Sales Lady | Minnesota |
| 76 | Margaret Tierney | 18 | Daughter | — | Minnesota |
| 77 | Catherine Tierney | 16 | Daughter | — | Minnesota |
| 78 | Thomas Tierney | 14 | Son | — | Minnesota |
| 79 | Willie Ehlers | 27 | Head | Bartender | S. Dakota |
| 80 | Grace Ehlers | 28 | Wife | Waitress | S. Dakota |
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)