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Mary Maloney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this Mary Maloney across the 1920, 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed), with identified parents Michael & Mike — first a daughter (b.~1918), then head of a 12-person household.
Age 22
b. ~1918
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Maloney |
| Given Name | Mary Agnes |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie Creek Twp. |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Occupation | Rural teacher |
| Industry | Public school |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 236 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Rural Teacher |
| Township / Ward | Prairie Creek Twp |
| Est. Birth Year | ~1918 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rita Maloney | Daughter | — | 17 | ~1923 |
| Mary Maloney | Daughter | — | 22 | ~1918 |
| Martha Maloney | Daughter | — | 12 | ~1928 |
| Ann Maloney | Daughter | — | 20 | ~1920 |
| Michael Maloney | Head | — | 58 | ~1882 |
| John Cox | Other | — | 30 | ~1910 |
| Richard Maloney | Son | — | 10 | ~1930 |
| Michael Maloney | Son | — | 24 | ~1916 |
| John Maloney | Son | — | 19 | ~1921 |
| Patrick Maloney | Son | — | 8 | ~1932 |
| James Maloney | Son | — | 15 | ~1925 |
| Grace Maloney | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Dubuque, Iowa
Daughter, age 2
Dubuque, Iowa · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maloney |
| Given Name | Mary Julia |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Dubuque, Iowa
Daughter, age 12
Dubuque, Iowa · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Molony |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Dubuque-County, Iowa
Daughter, age 22
Dubuque-County, Iowa · implied b. ~1918 — 12 household members
| Surname | Maloney |
| Given Name | Mary Agnes |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie Creek Twp. |
| 1935 Residence (County) | Dubuque |
| Occupation | Rural teacher |
| Industry | Public school |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 236 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Maloney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Molony (~0.92 confidence) and father Mike Maloney (~0.92 confidence) and mother Grace Maloney (~0.92 confidence) and mother Grace Maloney (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Molony
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Mike Maloney
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Grace Maloney
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Grace Maloney
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Maloney
Daughter · 1940 · age 22 · b. ~1918 · Iowa
★ You are viewing this record
Sibling
Rita Maloney
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Maloney
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Maloney
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Maloney
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Maloney
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Maloney
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Maloney
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Maloney
Sibling · 1940 · age 19
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 — Dubuque-County, Iowa
Open full size
1940 US Federal Census — Dubuque-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01159-00620)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Houtzen | 2 | Granddaughter | — | Iowa |
| 42 | Robert Fischer | 18 | Hired hand | Farm Laborer | Iowa |
| 43 | Michael Maloney | 58 | Head | Farmer | Iowa |
| 44 | Grace Maloney | 50 | Wife | — | Iowa |
| 45 | Michael Maloney | 24 | Son | Farm Laborer | Iowa |
| 46 | John Maloney | 19 | Son | Farm Laborer | Iowa |
| 47 | James Maloney | 15 | Son | — | Iowa |
| 48 | Richard Maloney | 10 | Son | — | Iowa |
| 49 | Patrick Maloney | 8 | Son | — | Iowa |
| 50 | Mary Agnes Maloney THIS PERSON | 22 | Daughter | Rural Teacher | Iowa |
| 51 | Ann Maloney | 20 | Daughter | Beauty Operator | Iowa |
| 52 | Rita Maloney | 17 | Daughter | — | Iowa |
| 53 | Martha Maloney | 12 | Daughter | — | Iowa |
| 54 | John Cox | 30 | Hired hand | Farm Laborer | Iowa |
| 55 | James Maloney | 39 | Head | Farmer | Iowa |
| 56 | Mary Maloney | 37 | Wife | — | Iowa |
| 57 | Donald Maloney | 8 | Son | — | Iowa |
| 58 | James Maloney | 7 | Son | — | Iowa |
| 59 | Kathleen Maloney | 2 | Daughter | — | Iowa |
| 60 | Marguerite Maloney | 44 | Sister | Seamstress | Iowa |
| 61 | Lawrence Decker | 45 | Head | Farmer | Iowa |
| 62 | Theresa Decker | 43 | Wife | — | Iowa |
| 63 | Leo Hunto | 24 | Son | Implement Dealer | Iowa |
| 64 | Loretta Hunto | 21 | Daughter | — | Iowa |
| 65 | Veronica Decker | 18 | Daughter | — | Iowa |
| 66 | Mary Catherine Decker | 15 | Daughter | — | Iowa |
| 67 | Earl Decker | 14 | Son | Farm Laborer | Iowa |
| 68 | Rose Mary Decker | 12 | Daughter | — | Iowa |
| 69 | Amelda Decker | 11 | Daughter | — | Iowa |
| 70 | Betty Decker | 9 | Daughter | — | Iowa |
| 71 | Jean Decker | 6 | Daughter | — | Iowa |
| 72 | Celestine Decker | 1 | Daughter | — | Iowa |
| 73 | Floyd Taber | 21 | Hired hand | Farm Laborer | Iowa |
| 74 | James Kane | 58 | Head | Farm Laborer | Iowa |
| 75 | Theresa Kane | 68 | Sister | — | Iowa |
| 76 | Mary Mussey | 67 | Head | — | Illinois |
| 77 | George Mussey | 65 | Husband | Farm Laborer | Iowa |
| 78 | Albert Coyle | 32 | Lodger | Fur Cutter | Illinois |
| 79 | Edward Merry | 62 | Brother-in-law | Farm Laborer | Iowa |
| 80 | Nicholas Turnis | 64 | Head | Farmer | Iowa |
Related Census Records
Pedigree Summary
Mary + 8 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)