MM
Mary Maher — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dakota-County, Minnesota
Our Model Tree links this Mary Maher across the 1930 and 1940 US Censuses in Dakota-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dakota-County, Minnesota |
| Surname | Maher |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Marshan Twp |
| 1935 Residence (County) | Dakota |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Marshan Twp |
| Est. Birth Year | ~1927 |
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 |
|---|---|---|---|---|
| Mary Maher | Daughter | — | 13 | ~1927 |
| Joanne Maher | Daughter | — | 9 | ~1931 |
| Cora Maher | Spouse | — | 37 | ~1903 |
| Patricia Maher | Daughter | — | 7 | ~1933 |
| Joseph Maher | Head | — | 37 | ~1903 |
| Lawrence Maher | Son | — | 11 | ~1929 |
| Monica Maher | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Dakota, Minnesota
Daughter, age 3
Dakota, Minnesota · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maher |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Wisconsin |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Dakota-County, Minnesota
Daughter, age 13
Dakota-County, Minnesota · implied b. ~1927 — 7 household members
| Surname | Maher |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Marshan Twp |
| 1935 Residence (County) | Dakota |
| Highest Grade | No 7 |
| 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 Maher across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Maher
Daughter · 1940 · age 13 · b. ~1927 · Minnesota
★ You are viewing this record
Sibling
Monica Maher
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Maher
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joanne Maher
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Maher
Sibling · 1940 · age 7
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 — Dakota-County, Minnesota
Open full size
1940 US Federal Census — Dakota-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01917-00514)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Maher | 37 | Head | Farmer | Minnesota |
| 2 | Cora Maher | 37 | Wife | Housekeeper | Minnesota |
| 3 | Mary Maher THIS PERSON | 13 | Daughter | — | Minnesota |
| 4 | Monica Maher | 12 | Daughter | — | Minnesota |
| 5 | Lawrence Maher | 11 | Son | — | Minnesota |
| 6 | Joanne Maher | 9 | Daughter | — | Minnesota |
| 7 | Patricia Maher | 7 | Daughter | — | Minnesota |
| 8 | Thomas H. Cuneen | 48 | Head | Farming | Minnesota |
| 9 | Mayme Cuneen | 47 | Sister | Housekeeper | Minnesota |
| 10 | James Kane | 40 | Laborer | Farm Laborer | Minnesota |
| 11 | Dirk | John Hendricks | 66 | Boarder | — | Germany |
| 12 | Patrick O'Brien | 74 | Boarder | — | Minnesota |
| 13 | Margaret Carroll | 65 | Head | Farming | Minnesota |
| 14 | Irena Carroll | 34 | Daughter | Housework | Minnesota |
| 15 | James Carroll | 30 | Son | Farming | Minnesota |
| 16 | Martin Carroll | 26 | Son | Farming | Minnesota |
| 17 | Martin Maher | 72 | Boarder | — | Minnesota |
| 18 | William Ryan | 55 | Laborer | Farm Laborer | Ireland |
| 19 | Paul P. Maher | 32 | Head | Farming | Minnesota |
| 20 | Dorothy Maher | 20 | Wife | Housework | Minnesota |
| 21 | Raphael Maher | 20 | Nephew | Farm Laborer | Minnesota |
| 22 | Gustave Holmstrom | 48 | Head | Farming | Sweden |
| 23 | Eda Holmstrom | 47 | Wife | — | Minnesota |
| 24 | Clarice Holmstrom | 17 | Daughter | Housework | Minnesota |
| 25 | Marjorie Holmstrom | 15 | Daughter | Farming | Minnesota |
| 26 | Verlin Holmstrom | 13 | Son | — | Minnesota |
| 27 | Kenneth Holmstrom | 11 | Son | — | Minnesota |
| 28 | Paul Holmstrom | 10 | Son | — | Minnesota |
| 29 | Betty Jane Holmstrom | 8 | Daughter | — | Minnesota |
| 30 | James Holmstrom | 4 | Son | — | Minnesota |
| 31 | John H. Judge | 30 | Head | Farming | Minnesota |
| 32 | Fred B. Somaker | 36 | Head | Housework | Minnesota |
| 33 | Kyra Somaker | 30 | Wife | Housework | Minnesota |
| 34 | Ardyce Somaker | 4 | Daughter | — | Minnesota |
| 35 | August G. Meyer | 30 | Head | Farming | Minnesota |
| 36 | Clara Meyer | 22 | Wife | — | Minnesota |
| 37 | August Edward Meyer | 1 | Son | — | Minnesota |
| 38 | Gerald Meyer | 0 | Son | — | Minnesota |
| 39 | Ralph J. Lonergan | 36 | Head | Farming | Minnesota |
| 40 | Gertrude Lonergan | 33 | Wife | — | Minnesota |
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)