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Mary Mcdonnell — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Buchanan, Iowa
Our Model Tree links this Mary Mcdonnell across the 1920 and 1930 US Censuses in Buchanan, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 12-person household.
Age 17
b. ~1913
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Buchanan, Iowa |
| Surname | McDonnell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Washington Township |
| Est. Birth Year | ~1913 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Raymond Mcdonnell | Son | — | 15 | ~1915 |
| Dorothy Mcdonnell | Daughter | — | 6 | ~1924 |
| Richard Mcdonnell | Son | — | 18 | ~1912 |
| James Mcdonnell | Son | — | 25 | ~1905 |
| James Mcdonnell | Head | — | 65 | ~1865 |
| Kathleen Mcdonnell | Daughter | — | 5 | ~1925 |
| Gertrude Mcdonnell | Daughter | — | 11 | ~1919 |
| Virginia Mcdonnell | Daughter | — | 3 | ~1927 |
| Sarah Mcdonnell | Other | — | 48 | ~1882 |
| Mary Mcdonnell | Daughter | — | 17 | ~1913 |
| Lucille Mcdonnell | Daughter | — | 13 | ~1917 |
| Josephine Mcdonnell | Daughter | — | 9 | ~1921 |
Census Appearances
1920
Buchanan, Iowa
Daughter, age 7
Buchanan, Iowa · implied b. ~1913 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonnell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Buchanan, Iowa
Daughter, age 17
Buchanan, Iowa · implied b. ~1913 — 12 household members
| Surname | McDonnell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| 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 Mcdonnell across 2 US Census years (1920 and 1930) in Buchanan, Iowa, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcdonnell
Daughter · 1930 · age 17 · b. ~1913 · Iowa
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Sibling
Gertrude Mcdonnell
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Mcdonnell
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Mcdonnell
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Mcdonnell
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Mcdonnell
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Mcdonnell
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Mcdonnell
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcdonnell
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Mcdonnell
Sibling · 1930 · age 13
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
1930 US Federal Census — Buchanan, Iowa
Open full size
1930 US Federal Census — Buchanan, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel644:0877)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Susanna Herrmann | 60 | Wife-H | — | Germany |
| 2 | Robert A. Bennerly | 58 | Head | Farmer | Illinois |
| 3 | Daisy Bennerly | 45 | Wife-H | — | Illinois |
| 4 | Lavonne Bennerly | 15 | Daughter | — | Illinois |
| 5 | Bernadine Bennerly | 13 | Daughter | — | Iowa |
| 6 | R. A. Jr. Bennerly | 7 | Son | — | Iowa |
| 7 | Albert Fowler | 45 | Roomer | Laborer | Illinois |
| 8 | Fred Westermeier | 28 | Servant | Laborer | Iowa |
| 9 | Bernard R. Wing | 30 | Head | Farmer | Iowa |
| 10 | Marjory Wing | 28 | Wife-H | — | Iowa |
| 11 | Margaret Wing | 8 | Daughter | — | Iowa |
| 12 | Jade Wing | 6 | Daughter | — | Iowa |
| 13 | Harold Wing | 3 | Son | — | Iowa |
| 14 | Patricia Wing | 1 | Daughter | — | Iowa |
| 15 | Clarence Warren | 32 | Servant | Laborer | Iowa |
| 16 | Joseph F. Wendling | 62 | Head | Farmer | Illinois |
| 17 | Winnifred Wendling | 53 | Wife-H | — | Iowa |
| 18 | William H. Wendling | 22 | Son | Laborer | Iowa |
| 19 | Louis E. Wendling | 17 | Son | — | Iowa |
| 20 | Margaret Wendling | 15 | Daughter | — | Iowa |
| 21 | Miriam Wendling | 14 | Daughter | — | Iowa |
| 22 | Herbert G. Wendling | 27 | Head | Farmer | Iowa |
| 23 | Christina Wendling | 26 | Wife-H | — | Iowa |
| 24 | Loretta Wendling | 1 | Daughter | — | Iowa |
| 25 | Mary Wendling | 0 | Daughter | — | Iowa |
| 26 | James Mcdonnell | 65 | Head | Farmer | Maryland |
| 27 | Sarah Mcdonnell | 48 | Wife-H | — | Iowa |
| 28 | James Mcdonnell | 25 | Son | Laborer | Iowa |
| 29 | Richard Mcdonnell | 18 | Son | Laborer | Iowa |
| 30 | Mary Mcdonnell THIS PERSON | 17 | Daughter | — | Iowa |
| 31 | Raymond Mcdonnell | 15 | Son | — | Iowa |
| 32 | Lucille Mcdonnell | 13 | Daughter | — | Iowa |
| 33 | Gertrude Mcdonnell | 11 | Daughter | — | Iowa |
| 34 | Josephine Mcdonnell | 9 | Daughter | — | Iowa |
| 35 | Dorothy Mcdonnell | 6 | Daughter | — | Iowa |
| 36 | Kathleen Mcdonnell | 5 | Daughter | — | Iowa |
| 37 | Virginia Mcdonnell | 3 | Daughter | — | Iowa |
| 38 | Martin C. Wesper | 63 | Head | Farmer | Poland |
| 39 | Agnes Wesper | 52 | Wife-H | — | Iowa |
| 40 | Chas Wesper | 27 | Son | — | Iowa |
| 41 | Wayne Wesper | 17 | Son | — | Iowa |
| 42 | Margaret Wesper | 13 | Daughter | — | Iowa |
| 43 | Mary Baggot | 58 | Head | — | Iowa |
| 44 | Nora Baggot | 53 | Sister | — | Iowa |
| 45 | Edward Miller | 54 | Head | Farmer | Illinois |
| 46 | Margaret Miller | 53 | Wife-H | — | Iowa |
| 47 | Chris Reichen | 52 | Head | Farmer | Switzerland |
| 48 | Antoinette Reichen | 44 | Wife-H | — | Germany |
| 49 | Lewis Reichen | 13 | Son | — | Iowa |
| 50 | Helen Reichen | 11 | Daughter | — | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)