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Mary Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Mary Mahoney across the 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1893), then head of a 9-person household.
Age 47
b. ~1893
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Mahoney |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | ST. PAUL CITY |
| 1935 Residence (County) | RAMSEY |
| Additional Details | |
| Highest Grade | C 3 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1893 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Mahoney | Daughter | — | 8 | ~1932 |
| Mary Mahoney | Daughter | — | 14 | ~1926 |
| Margaret Mahoney | Daughter | — | 6 | ~1934 |
| Geoffrey Mahoney | Head | — | 49 | ~1891 |
| Geoffrey Mahoney | Son | — | 16 | ~1924 |
| Richard Mahoney | Son | — | 10 | ~1930 |
| James Mahoney | Son | — | 2 | ~1938 |
| Paul Mahoney | Son | — | 13 | ~1927 |
| Mary Mahoney | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Ramsey, Minnesota
Other, age 36
Ramsey, Minnesota · implied b. ~1894 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Mary M. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 29 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Spouse, age 47
Ramsey-County, Minnesota · implied b. ~1893 — 9 household members
| Surname | Mahoney |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | ST. PAUL CITY |
| 1935 Residence (County) | RAMSEY |
| Highest Grade | C 3 |
| 1935 Residence | Same House |
| 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 Mahoney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mahoney
Spouse · 1940 · age 47 · b. ~1893 · 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 — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-02003-00638)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George B. Millard | 9 | Son | — | Minnesota |
| 2 | Josephine B. Millard | 6 | Daughter | — | Minnesota |
| 3 | Frank S. Hazen | 51 | Head | Manager | Massachusetts |
| 4 | Alice H. Hazen | 50 | Wife | — | Minnesota |
| 5 | Mary J. Hazen | 22 | Daughter | — | Minnesota |
| 6 | James A. Hazen | 16 | Son | — | Minnesota |
| 7 | Marie E. Granheim | 18 | Servant | Servant | No. Dakota |
| 8 | Charles J. Longbotham | 56 | Head | Office Mgr. | Wisconsin |
| 9 | Ada L. Longbotham | 56 | Wife | — | Minnesota |
| 10 | Walter H. Honebrink | 52 | Head | Vice President | Minnesota |
| 11 | Irene M. Honebrink | 50 | Wife | — | Minnesota |
| 12 | Lois I. Honebrink | 24 | Daughter | Stenographer | Minnesota |
| 13 | Walter R. Honebrink | 22 | Son | — | Minnesota |
| 14 | Carol K. Honebrink | 19 | Daughter | — | Minnesota |
| 15 | Roger W. Honebrink | 14 | Son | — | Minnesota |
| 16 | Mary J. Honebrink | 4 | Daughter | — | Minnesota |
| 17 | Esther E. Mcintyre | 28 | Servant | Servant | Wisconsin |
| 18 | Oscar W. Swanson | 43 | Head | Gen. Supt. | Minnesota |
| 19 | Helen A. Swanson | 39 | Wife | — | Minnesota |
| 20 | William O. Swanson | 15 | Son | — | Minnesota |
| 21 | Helen Ann Swanson | 13 | Daughter | — | Minnesota |
| 22 | Mary Lou Swanson | 6 | Daughter | — | Minnesota |
| 23 | Geoffrey P. Mahoney | 49 | Head | Attorney | Ireland |
| 24 | Mary J. Mahoney THIS PERSON | 47 | Wife | — | Minnesota |
| 25 | Geoffrey J. Mahoney | 16 | Son | — | Minnesota |
| 26 | Mary C. Mahoney | 14 | Daughter | — | Minnesota |
| 27 | Paul S. Mahoney | 13 | Son | — | Minnesota |
| 28 | Richard P. Mahoney | 10 | Son | — | Minnesota |
| 29 | Elizabeth T. Mahoney | 8 | Daughter | — | Minnesota |
| 30 | Margaret Ann Mahoney | 6 | Daughter | — | Minnesota |
| 31 | James M. Mahoney | 2 | Son | — | Minnesota |
| 32 | Cyril E. Sheehy | 44 | Head | Gen. Mgr. | Nebraska |
| 33 | Dorothy J. Sheehy | 43 | Wife | — | New York |
| 34 | Cyril E. Sheehy | 20 | Son | — | Illinois |
| 35 | Dorothy A. Sheehy | 18 | Daughter | — | Washington |
| 36 | Roger H. Sheehy | 6 | Son | — | Minnesota |
| 37 | Carol J. Sheehy | 5 | Daughter | — | Minnesota |
| 38 | Doris Johnson | 25 | Servant | Servant | Minnesota |
Related Census Records
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)