MD
Mary Donohue — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Johnson-County, Iowa
Our Model Tree links this Mary Donohue across the 1930 and 1940 US Censuses in Johnson-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Johnson-County, Iowa |
| Surname | Donohue |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Graham Twp. |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Graham Twp |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Mary Donohue | Daughter | — | 15 | ~1925 |
| Mary Donohue | Spouse | — | 43 | ~1897 |
| John Donohue | Son | — | 14 | ~1926 |
| Bernard Donohue | Son | — | 7 | ~1933 |
| William Donohue | Son | — | 1 | ~1939 |
| Patrick Donohue | Head | — | 49 | ~1891 |
| Margaret Donohue | Daughter | — | 20 | ~1920 |
| Francis Donohue | Son | — | 18 | ~1922 |
Census Appearances
1930
Johnson, Iowa
Daughter, age 6
Johnson, Iowa · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahue |
| Given Name | Marilyn J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| 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
Johnson-County, Iowa
Daughter, age 15
Johnson-County, Iowa · implied b. ~1925 — 8 household members
| Surname | Donohue |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Graham Twp. |
| Highest Grade | Hs 1 |
| 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 Donohue across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donohue
Daughter · 1940 · age 15 · b. ~1925 · Iowa
★ You are viewing this record
Sibling
Margaret Donohue
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Donohue
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Donohue
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Donohue
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Donohue
Sibling · 1940 · age 1
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 — Johnson-County, Iowa
Open full size
1940 US Federal Census — Johnson-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01171-00166)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Roy A Kabela | 5 | Son | — | Iowa |
| 2 | Phyllis L Kabela | 4 | Daughter | — | Iowa |
| 3 | Albert L Kabela | 65 | Head | Farmer | Iowa |
| 4 | Alice A Kabela | 46 | Wife | — | Iowa |
| 5 | Phillip W Kabela | 27 | Son | Farmer | Iowa |
| 6 | Ursula S Kabela | 21 | Daughter-in-law | — | Iowa |
| 7 | Loyal L Hunter | 34 | Head | Farmer | Iowa |
| 8 | Mildred V Hunter | 26 | Wife | — | Iowa |
| 9 | Judith M Hunter | 3 | Daughter | — | Iowa |
| 10 | Kay C Hunter | 1 | Daughter | — | Iowa |
| 11 | Louis R Scobee | 22 | Hired hand | Farm Labor | Missouri |
| 12 | Glenn H Hope | 44 | Head | Farmer | Iowa |
| 13 | Hilda Hope | 44 | Wife | — | Iowa |
| 14 | Glenn H Hope | 13 | Son | — | Iowa |
| 15 | Clyde Hanna | 32 | Hired hand | Farm Labor | Missouri |
| 16 | Bennett L Bahmler | 79 | Head | Farmer | Michigan |
| 17 | Delia Bahmler | 68 | Wife | — | Iowa |
| 18 | Earl F Bahmler | 45 | Son | Farmer | Iowa |
| 19 | Andrew J Foraker | 71 | Head | Farmer | Illinois |
| 20 | Carrie H Foraker | 68 | Wife | — | Illinois |
| 21 | Emery J Anderson | 62 | Hired hand | Farm Labor | Illinois |
| 22 | Jacob J Wildman | 53 | Head | Farmer | Iowa |
| 23 | Emma L Wildman | 60 | Wife | — | Iowa |
| 24 | John Volk | 37 | Hired hand | Farm Labor | Iowa |
| 25 | Patrick P Donohue | 49 | Head | Farmer | Irish Free State |
| 26 | Mary E Donohue | 43 | Wife | — | Iowa |
| 27 | Francis D Donohue | 18 | Son | Farming | Iowa |
| 28 | Margaret A Donohue | 20 | Daughter | — | Iowa |
| 29 | Mary E Donohue THIS PERSON | 15 | Daughter | — | Iowa |
| 30 | John R Donohue | 14 | Son | — | Iowa |
| 31 | Bernard P Donohue | 7 | Son | — | Iowa |
| 32 | William B Donohue | 1 | Son | — | Iowa |
| 33 | Luther J Obley | 52 | Head | Farmer | Tennessee |
| 34 | Cora J Obley | 52 | Wife | — | Illinois |
| 35 | Harry E Obley | 23 | Son | Truck Driver | Iowa |
| 36 | Melvin J Obley | 19 | Son | — | Iowa |
| 37 | Francis L Obley | 16 | Daughter | — | Iowa |
| 38 | Darwin E Obley | 13 | Son | — | Iowa |
| 39 | Raymond E Obley | 10 | Son | — | Iowa |
| 40 | Martin M O'Brien | 59 | Head | Farmer | 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)