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Mary Maher — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Mary Maher across the 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Maher |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Some house |
| 1935 Residence (County) | Some house |
| Additional Details | |
| Occupation | Typist |
| Industry | State Education |
| Class of Worker | GW |
| Hours Worked | 16 |
| Income (1939) | 61 |
| Highest Grade | No H-4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Typist |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1921 |
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 |
|---|---|---|---|---|
| Leo Maher | Son | — | 20 | ~1920 |
| Lois Maher | Daughter | — | 11 | ~1929 |
| Mary Maher | Daughter | — | 19 | ~1921 |
| Winnifred Maher | Head | — | 42 | ~1898 |
| Edward Maher | Son | — | 12 | ~1928 |
| Richard Maher | Son | — | 14 | ~1926 |
| Patricia Maher | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Ramsey, Minnesota
Other, age 9
Ramsey, Minnesota · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maher |
| Given Name | Mary D. |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Daughter, age 19
Ramsey-County, Minnesota · implied b. ~1921 — 7 household members
| Surname | Maher |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Some house |
| 1935 Residence (County) | Some house |
| Occupation | Typist |
| Industry | State Education |
| Class of Worker | GW |
| Hours Worked | 16 |
| Income (1939) | 61 |
| Highest Grade | No H-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 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 19 · b. ~1921 · Minnesota
★ You are viewing this record
Sibling
Leo Maher
Sibling · 1940 · age 20
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
Sibling
Richard Maher
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Maher
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Maher
Sibling · 1940 · age 11
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 — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01997-00262)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Heller | 67 | Head | — | Austria |
| 2 | Anna L. Heller | 39 | Daughter | Office Manager | Minnesota |
| 3 | Elvira T. Heller | 35 | Daughter | Office Manager | Minnesota |
| 4 | John Fischer | 72 | Daughter | — | Austria |
| 5 | Mary O'Rourke | 79 | Head | — | Minnesota |
| 6 | Samuel O'Rourke | 50 | Son | Cattle Buyer | Minnesota |
| 7 | Fred O'Rourke | 41 | Son | Finger Printer | Minnesota |
| 8 | Hattie Iverson | 67 | Housekeeper | Housekeeper | Minnesota |
| 9 | William Grogan | 47 | Head | Monotyper | Minnesota |
| 10 | Helen Grogan | 44 | Wife | — | Minnesota |
| 11 | George A. Carpenter | 57 | Head | Custodian | Iowa |
| 12 | Olive Carpenter | 55 | Wife | — | Illinois |
| 13 | Simon Losch | 23 | Head | Repair Man | Minnesota |
| 14 | Sarah Losch | 23 | Wife | Saleslady | Iowa |
| 15 | Joseph J. Maher | 49 | Head | Chauffeur | Minnesota |
| 16 | Mary Maher | 45 | Wife | Bookkeeper | Iowa |
| 17 | James P. Maher | 14 | Son | — | Minnesota |
| 18 | Shirley E. Maher | 11 | Daughter | — | Minnesota |
| 19 | Robert E. Maher | 10 | Son | — | Minnesota |
| 20 | Helen Maher | 7 | Daughter | — | Minnesota |
| 21 | Gerald Maher | 35 | Brother | Salesman | Minnesota |
| 22 | William J. Kilbourne | 51 | Head | Supervisor | New York |
| 23 | Katherine Kilbourne | 47 | Wife | — | Wisconsin |
| 24 | Warren Kilbourne | 23 | Son | — | Minnesota |
| 25 | Virginia Kilbourne | 21 | Daughter | — | Minnesota |
| 26 | Lucille Bergman | 32 | Sister-in-law | Rural School Teacher | Wisconsin |
| 27 | Fred Schneider | 36 | Head | Butcher | Russia |
| 28 | Emma Schneider | 30 | Wife | Casing Grader | Russia |
| 29 | Alvin Schneider | 12 | Son | — | Minnesota |
| 30 | Deloris Schneider | 9 | Daughter | — | Minnesota |
| 31 | Roger Schneider | 5 | Son | — | Minnesota |
| 32 | Ruth Mohrlant | 19 | Housekeeper | Housekeeper | Minnesota |
| 33 | Winnifred Maher | 42 | Head | — | Minnesota |
| 34 | Leo Maher | 20 | Son | Delivery Man | Minnesota |
| 35 | Mary Maher THIS PERSON | 19 | Daughter | Typist | Minnesota |
| 36 | Richard Maher | 14 | Son | — | Minnesota |
| 37 | Edward Maher | 12 | Son | — | Minnesota |
| 38 | Lois Maher | 11 | Daughter | — | Minnesota |
| 39 | Patricia Maher | 7 | Daughter | — | Minnesota |
| 40 | Cornelius Mcdonald | 69 | Head | — | Northern Ireland |
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)