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Mary Mcelroy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Wapello, Iowa
Our Model Tree links this Mary Mcelroy across the 1930 and 1940 US Censuses in Wapello, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 13-person household.
Age 5
b. ~1925
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Wapello, Iowa |
| Surname | McElroy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Ottumwa City |
| 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.
13 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Marion Mcelroy | Son | — | 3 | ~1927 |
| Cleo Mcelroy | Daughter | — | 12 | ~1918 |
| Mary Mcelroy | Daughter | — | 5 | ~1925 |
| Harold Mcelroy | Other | — | 1 | ~1929 |
| Larry Mcelroy | Other | — | 19 | ~1911 |
| Paul Mcelroy | Son | — | 16 | ~1914 |
| Max Mcelroy | Son | — | 9 | ~1921 |
| Russell Mcelroy | Son | — | 8 | ~1922 |
| Lila Mcelroy | Spouse | — | 43 | ~1887 |
| Boyd Mcelroy | Son | — | 20 | ~1910 |
| Dorothy Mcelroy | Daughter | — | 14 | ~1916 |
| Ray Mcelroy | Son | — | 18 | ~1912 |
| Ralph Mcelroy | Head | — | 43 | ~1887 |
Census Appearances
1930
Wapello, Iowa
Daughter, age 5
Wapello, Iowa · implied b. ~1925 — 13 household members
| Surname | McElroy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Wapello-County, Iowa
Daughter, age 16
Wapello-County, Iowa · implied b. ~1924 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| Given Name | Martha Belle |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Richland Twp |
| 1935 Residence (County) | Wapello County |
| Occupation | none |
| Highest Grade | H 2 |
| 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 Mcelroy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcelroy
Daughter · 1930 · age 5 · b. ~1925 · Iowa
★ You are viewing this record
Sibling
Russell Mcelroy
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Mcelroy
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Mcelroy
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Boyd Mcelroy
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cleo Mcelroy
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Max Mcelroy
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mcelroy
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Mcelroy
Sibling · 1930 · age 14
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 — Wapello, Iowa
Open full size
1930 US Federal Census — Wapello, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel686:0018)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mabel Gaddis | 26 | Daughter | — | Iowa |
| 52 | Lester Gaddis | 23 | Son | Laborer | Iowa |
| 53 | Helen Gaddis | 19 | Daughter | Saleslady | Iowa |
| 54 | Pearl Gaddis | 14 | Daughter | — | Iowa |
| 55 | Ralph Mcelroy | 43 | Head | Plumber | Iowa |
| 56 | Lila Mcelroy | 43 | Wife | — | Illinois |
| 57 | Boyd Mcelroy | 20 | Son | Laborer | Iowa |
| 58 | Ray Mcelroy | 18 | Son | Laborer | Iowa |
| 59 | Paul Mcelroy | 16 | Son | Laborer | Iowa |
| 60 | Dorothy Mcelroy | 14 | Daughter | — | Iowa |
| 61 | Cleo Mcelroy | 12 | Daughter | — | Iowa |
| 62 | Max Mcelroy | 9 | Son | — | Iowa |
| 63 | Russell Mcelroy | 8 | Son | — | Iowa |
| 64 | Mary Mcelroy THIS PERSON | 5 | Daughter | — | Iowa |
| 65 | Marion Mcelroy | 3 | Son | — | Iowa |
| 66 | Larry Mcelroy | 19 | Daughter-in-law | — | Iowa |
| 67 | Harold Mcelroy | 1 | Grandson | — | Iowa |
| 68 | Clem Ellsworth | 28 | Head | Moulder | Missouri |
| 69 | Sylvia Ellsworth | 28 | Wife | — | Missouri |
| 70 | Harold Jones | 13 | Stepson | — | Iowa |
| 71 | Dale Jones | 11 | Stepson | — | Iowa |
| 72 | Frank D. Reed | 62 | Head | Commercial Salesman | Iowa |
| 73 | Julia C. Reed | 58 | Wife | — | Illinois |
| 74 | Mary E. Clark | 93 | Mother-in-law | — | New York |
| 75 | Arva Wagers | 70 | Head | — | Iowa |
| 76 | Harry A. Vaughan | 33 | Head | Round House Clerk | Missouri |
| 77 | Anna A. Vaughan | 33 | Wife | — | Sweden |
| 78 | Marilyn R. Vaughan | 3 | Daughter | — | Iowa |
| 79 | Leonard Bradley | 57 | Head | Locomotive Engineer | Switzerland |
| 80 | Myrtle Bradley | 46 | Wife | — | Missouri |
| 81 | Weeden A. White | 53 | Brother-in-law | Laborer | Missouri |
| 82 | Etta O. Hubbard | 66 | Head | — | Iowa |
| 83 | Martha J. Tullis | 78 | Mother | — | Ohio |
| 84 | Delia Keller | 69 | Head | — | New York |
| 85 | Don Keller | 38 | Son | Painter | Iowa |
| 86 | Christian Paint | 59 | Head | — | Scotland |
| 87 | James P. Gordon | 76 | Head | Locomotive Engineer | Wisconsin |
| 88 | Anna M. Gordon | 68 | Wife | — | Wisconsin |
| 89 | Elizabeth Campbell | 65 | Sister-in-law | — | Wisconsin |
| 90 | Will M. Davis | 60 | Head | Locomotive Engineer | Iowa |
| 91 | Lucy Davis | 52 | Wife | — | Iowa |
| 92 | John Warman | 67 | Head | Brakeman | Iowa |
| 93 | Ella Warman | 67 | Wife | — | Iowa |
| 94 | Elmer J. Rutter | 56 | Head | — | Iowa |
| 95 | Ethel Rutter | 42 | Wife | — | Iowa |
| 96 | Lynn O. Rutter | 13 | Adopted Son | — | Iowa |
| 97 | Rutter | 4 | Daughter | — | Iowa |
| 98 | Silas Messersmith | 50 | Head | Laborer | Iowa |
| 99 | Cleo X. Messersmith | 43 | Wife | — | Iowa |
| 100 | William H. Tyler | 53 | Head | Merchant | Kansas |
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)