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Mary Murphy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hamilton-County, Iowa
Our Model Tree links this Mary Murphy across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1875), then head of a 9-person household.
Age 65
b. ~1875
Female
Spouse
Born: Rhode Island
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Iowa |
| Surname | Murphy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Blairsburg |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Blairsburg |
| Est. Birth Year | ~1875 |
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 |
|---|---|---|---|---|
| Mary Greufe | Daughter | — | 12 | ~1928 |
| William Greufe | Head | — | 46 | ~1894 |
| Frank Murphy | Son | — | 34 | ~1906 |
| William Greufe | Son | — | 6 | ~1934 |
| Vernon Greufe | Son | — | 14 | ~1926 |
| Nathan Greufe | Son | — | 11 | ~1929 |
| Arthur Murphy | Son | — | 43 | ~1897 |
| Mary Murphy | Spouse | — | 65 | ~1875 |
| Francis Greufe | Spouse | — | 36 | ~1904 |
Census Appearances
1920
Hamilton, Iowa
Spouse, age 45
Hamilton, Iowa · implied b. ~1875 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Hamilton, Iowa
Spouse, age 55
Hamilton, Iowa · implied b. ~1875 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Age at First Marriage | 21 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Hamilton-County, Iowa
Spouse, age 65
Hamilton-County, Iowa · implied b. ~1875 — 9 household members
| Surname | Murphy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Blairsburg |
| 1935 Residence (County) | Hamilton |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Murphy 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 Murphy
Spouse · 1940 · age 65 · b. ~1875 · Iowa
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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 — Hamilton-County, Iowa
Open full size
1940 US Federal Census — Hamilton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01164-00024)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arnold Anderson | 22 | Son | Labor | Iowa |
| 42 | Du Verne Anderson | 1 | Son | — | Iowa |
| 43 | Elmer Arnold | 48 | Head | Labor | Illinois |
| 44 | Nellie Arnold | 42 | Wife | — | Illinois |
| 45 | Donald Arnold | 18 | Son | Labor | Iowa |
| 46 | Ralph Arnold | 21 | Son | Labor | Iowa |
| 47 | Della Arnold | 18 | Daughter-in-law | — | Ohio |
| 48 | F. S. Hand | 56 | Head | Labor | Iowa |
| 49 | Treva Hand | 50 | Wife | — | Iowa |
| 50 | F. E. Hudson | 44 | Head | Labor | Missouri |
| 51 | Elmer Hudson | 18 | Daughter | — | Iowa |
| 52 | Donald Hudson | 16 | Son | — | Iowa |
| 53 | Virginia Hudson | 14 | Son | — | Iowa |
| 54 | Rubie Hudson | 12 | Son | — | Iowa |
| 55 | Darlene Hudson | 9 | Daughter | — | Iowa |
| 56 | Edward P. Olson | 36 | Head | Labor | Norway |
| 57 | Jeanette Olson | 20 | Wife | — | Germany |
| 58 | Edward O. Olson | 5 | Son | — | Iowa |
| 59 | Jerry D. Olson | 3 | Son | — | Iowa |
| 60 | Scott S. Heffner | 57 | Head | Labor | Iowa |
| 61 | Lena Heffner | 50 | Wife | — | Iowa |
| 62 | Dorothy Heffner | 19 | Daughter | — | Iowa |
| 63 | Ramona Heffner | 14 | Daughter | — | Iowa |
| 64 | Beth Heffner | 12 | Daughter | — | Iowa |
| 65 | Ernest Green | 34 | Head | Labor | North Carolina |
| 66 | Lucille Green | 35 | Wife | — | Missouri |
| 67 | Frances Green | 4 | Daughter | — | Iowa |
| 68 | Infant Green | 0 | Son | — | Iowa |
| 69 | James Farley | 37 | Head | Labor | Iowa |
| 70 | Edith Farley | 58 | Housekeeper | Housekeeper | Iowa |
| 71 | Everett Farley | 36 | Laborer | Labor | Iowa |
| 72 | William Greufe | 46 | Head | Labor | Missouri |
| 73 | Francis Greufe | 36 | Wife | — | Iowa |
| 74 | Vernon Greufe | 14 | Son | — | Iowa |
| 75 | Mary Ann Greufe | 12 | Daughter | — | Iowa |
| 76 | Nathan Greufe | 11 | Son | — | Iowa |
| 77 | William Greufe | 6 | Son | — | Iowa |
| 78 | Mary Murphy THIS PERSON | 65 | Wife | — | Rhode Island |
| 79 | Arthur Murphy | 43 | Son | Labor | Iowa |
| 80 | Frank Murphy | 34 | Son | Labor | Iowa |
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)