MD
Mary Donahue — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this Mary Donahue across the 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 8-person household.
Age 45
b. ~1895
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Donahue |
| Given Name | Mary Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Dubuque City |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Dubuque City |
| Est. Birth Year | ~1895 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rita Donahue | Daughter | — | 9 | ~1931 |
| Rose Donahue | Daughter | — | 10 | ~1930 |
| Joan Donahue | Daughter | — | 4 | ~1936 |
| Thomas Donahue | Head | — | 45 | ~1895 |
| David Donahue | Son | — | 6 | ~1934 |
| John Donahue | Son | — | 4 | ~1936 |
| Joseph Donahue | Son | — | 12 | ~1928 |
| Mary Donahue | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Dubuque, Iowa
Spouse, age 33
Dubuque, Iowa · implied b. ~1897 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahue |
| Given Name | Marjorie A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| 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
Spouse, age 45
Dubuque-County, Iowa · implied b. ~1895 — 8 household members
| Surname | Donahue |
| Given Name | Mary Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Dubuque City |
| 1935 Residence (County) | Dubuque |
| Industry | 0 |
| Class of Worker | 0 |
| 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 Donahue across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donahue
Spouse · 1940 · age 45 · b. ~1895 · 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 — 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-t0627-01159-00243)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dora S Datisman | 44 | Wife | — | Iowa |
| 2 | Albert L Datisman | 46 | Head | Assistant Foreman | Iowa |
| 3 | Marie S Datisman | 39 | Wife | — | Iowa |
| 4 | Nancy Lee Datisman | 5 | Daughter | — | Iowa |
| 5 | Thomas W Breden | 45 | Head | Insurance Salesman | Kansas |
| 6 | Louise Breden | 44 | Wife | — | Illinois |
| 7 | Thomas Jr Breden | 22 | Son | Editor | Iowa |
| 8 | Mary Breden | 20 | Daughter | Music Teacher | Iowa |
| 9 | Dale A Gabrink | 43 | Head | Assistant Engineer | Iowa |
| 10 | Rose R Gabrink | 45 | Wife | — | Iowa |
| 11 | Robert P Marshall | 64 | Head | Auditor | Iowa |
| 12 | Margaret S Marshall | 57 | Wife | — | Iowa |
| 13 | Thomas D Donahue | 45 | Head | Brakeman | Iowa |
| 14 | Mary Ellen Donahue THIS PERSON | 45 | Wife | — | Iowa |
| 15 | Joseph Donahue | 12 | Son | — | Iowa |
| 16 | Rose Mary Donahue | 10 | Daughter | — | Iowa |
| 17 | Rita Ann Donahue | 9 | Daughter | — | Iowa |
| 18 | David Donahue | 6 | Son | — | Iowa |
| 19 | Joan Marie Donahue | 4 | Daughter | — | Iowa |
| 20 | John E Donahue | 4 | Son | — | Iowa |
| 21 | William J Rath | 46 | Head | Commission Driver | Illinois |
| 22 | Rebecca R Rath | 40 | Wife | — | Wisconsin |
| 23 | Floyd Rath | 22 | Son | Service Man | Illinois |
| 24 | Charles H Quinlan | 27 | Head | Foreman | Illinois |
| 25 | Dorothy Quinlan | 27 | Wife | — | Iowa |
| 26 | Robert Quinlan | 5 | Son | — | Iowa |
| 27 | Edith Quinlan | 56 | Mother | Book-Keeper | Indiana |
| 28 | Louis (S) Rotman | 49 | Head | Owner | Russia |
| 29 | Jerry R Rotman | 18 | Son | — | Iowa |
| 30 | Rosemary Rotman | 20 | Daughter | — | Missouri |
| 31 | Ruby Jane Rotman | 13 | Daughter | — | Iowa |
| 32 | H Wesley Brodt | 28 | Head | Traveling Repair Man | Ohio |
| 33 | Dorothy S Brodt | 28 | Wife | — | Ohio |
| 34 | Dale W Brodt | 2 | Son | — | Pennsylvania |
| 35 | Bruce Brodt | 0 | Son | — | Iowa |
| 36 | Edwin J Birndorf | 55 | Head | Repairman | Hungary |
| 37 | Helen D Birndorf | 44 | Wife | — | Illinois |
| 38 | Lester D Birndorf | 18 | Son | New Worker | Iowa |
| 39 | Arthur B Hayes | 48 | Head | Salesman | Iowa |
| 40 | Helen Hayes | 50 | Wife | — | Iowa |
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)