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Mary Mcelroy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Union, Iowa
Our Model Tree links this Mary Mcelroy across the 1920, 1930 and 1940 US Censuses in Union, Iowa (XGBoost, ~Confirmed) — first a head (b.~1863), then head of a 9-person household.
Age 57
b. ~1863
Female
Head
Born: Missouri
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Union, Iowa |
| Surname | McElroy |
| Given Name | Mary S. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Farmer |
| Township / Ward | Sand Creek Township |
| Est. Birth Year | ~1863 |
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.
9 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Michael Mcelroy | Spouse | — | 80 | ~1840 |
| Jacob Mcelroy | Son | — | 20 | ~1900 |
| Mary Mcelroy | Head | — | 57 | ~1863 |
| John Mcelroy | Son | — | 19 | ~1901 |
| Francis Mcelroy | Daughter | — | 16 | ~1904 |
| Margaret Mcelroy | Daughter | — | 21 | ~1899 |
| Edward Mcelroy | Son | — | 24 | ~1896 |
| Bertrand Mcelroy | Son | — | 25 | ~1895 |
| Mary Mcelroy | Daughter | — | 23 | ~1897 |
Census Appearances
1920
Union, Iowa
Head, age 57
Union, Iowa · implied b. ~1863 — 9 household members
| Surname | McElroy |
| Given Name | Mary S. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Union, Iowa
Other, age 67
Union, Iowa · implied b. ~1863 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| Given Name | Mary S |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Missouri |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Union-County, Iowa
Other, age 77
Union-County, Iowa · implied b. ~1863 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| Given Name | Mary J. |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Missouri |
| 1935 Residence (City) | Sand Creek Twp |
| 1935 Residence (County) | Union County |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mcelroy
Head · 1920 · age 57 · b. ~1863 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Union, Iowa
Open full size
1920 US Federal Census — Union, Iowa
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu515unit:0888)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles S. Wilson | 21 | Head | Farmer | Iowa |
| 2 | Bernice Wilson | 22 | Wife | — | Iowa |
| 3 | Portia M. Wilson | 0 | Daughter | — | Iowa |
| 4 | Frank L. Forbes | 49 | Head | Farmer | Iowa |
| 5 | Ruhama A. Forbes | 51 | Wife | — | Iowa |
| 6 | Irma R. Forbes | 20 | Daughter | — | Iowa |
| 7 | Charles S. Sullivan | 26 | Head | Farmer | Iowa |
| 8 | Sarah H. Sullivan | 24 | Wife | — | Iowa |
| 9 | Mary S. Mcelroy THIS PERSON | 57 | Head | Farmer | Missouri |
| 10 | Bertrand E. Mcelroy | 25 | Son | Farm Laborer | Iowa |
| 11 | Edward O. Mcelroy | 24 | Son | Farm Laborer | Iowa |
| 12 | Mary A. Mcelroy | 23 | Daughter | Milliner | Iowa |
| 13 | Margaret E. Mcelroy | 21 | Daughter | Teacher | Iowa |
| 14 | Jacob M. Mcelroy | 20 | Son | Farm Laborer | Iowa |
| 15 | John R. Mcelroy | 19 | Son | Farm Laborer | Iowa |
| 16 | Francis P. Mcelroy | 16 | Daughter | — | Iowa |
| 17 | Michael Mcelroy | 80 | Husband | — | Ireland |
| 18 | Francis A. Devebaugh | 52 | Head | Farmer | Illinois |
| 19 | Mahala R. Devebaugh | 43 | Wife | — | Illinois |
| 20 | Webster S. Devebaugh | 23 | Son | Salesman | Illinois |
| 21 | Lois G. Devebaugh | 19 | Daughter | Nurse | Illinois |
| 22 | Wendel M. Devebaugh | 6 | Son | — | Iowa |
| 23 | Charles B. New | 53 | Head | Farmer | Illinois |
| 24 | Jane E. New | 48 | Wife | — | Missouri |
| 25 | Hugh B. New | 16 | Son | Farm Laborer | Kansas |
| 26 | John W. Morrison | 60 | Head | Farmer | Iowa |
| 27 | Catherine T. Morrison | 43 | Wife | — | Iowa |
| 28 | Philo B. Morrison | 63 | Brother | Farmer | Iowa |
| 29 | Anderson M. Gross | 50 | Head | Farmer | Iowa |
| 30 | Ada G. Gross | 48 | Wife | — | Iowa |
| 31 | Harold R. Gross | 20 | Son | Farm Laborer | Iowa |
| 32 | Lester J. Gross | 18 | Son | Farm Laborer | Iowa |
| 33 | Leon E. Gross | 11 | Son | — | Iowa |
| 34 | Sidney Gross | 5 | Son | — | Iowa |
| 35 | Lily B. Underwood | 22 | Daughter | — | Iowa |
| 36 | Russell B. Underwood | 23 | Son in Law | Farm Laborer | Iowa |
| 37 | Harold R. Underwood | 1 | Grand Son | — | Iowa |
| 38 | Harry N. Comp | 52 | Head | Farmer | Illinois |
| 39 | Kate B. Comp | 47 | Wife | — | Iowa |
| 40 | Lawrence D. Comp | 17 | Son | Farm Laborer | Iowa |
| 41 | Verle L. Comp | 16 | Son | Farm Laborer | Iowa |
| 42 | L. Dorothy | 15 | Daughter | — | Iowa |
| 43 | Margaret L. Comp | 13 | Daughter | — | Iowa |
| 44 | Donald W. Comp | 10 | Son | — | Iowa |
| 45 | Harold W. Comp | 4 | Son | — | Iowa |
| 46 | Morton J. Hawkins | 60 | Head | Farmer | Iowa |
| 47 | Lizzie M. Hawkins | 58 | Wife | — | Ohio |
| 48 | Lela M. Hawkins | 32 | Daughter | Servant | Iowa |
| 49 | Reba B. Hawkins | 30 | Daughter | Teacher | Iowa |
| 50 | Wyatt L. Hawkins | 20 | Son | Farm Laborer | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)