HM
Helen Mcdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this Helen Mcdonald across the 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | McDonald |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Minden Township |
| Additional Details | |
| Occupation | 0 |
| Highest Grade | No 6 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | 0 |
| Township / Ward | Minden Township |
| Est. Birth Year | ~1928 |
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 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| P Mcdonald | Head | — | 49 | ~1891 |
| Emmet Mcdonald | Son | — | 20 | ~1920 |
| Francis Mcdonald | Son | — | 17 | ~1923 |
| Helen Mcdonald | Daughter | — | 12 | ~1928 |
| Paul Mcdonald | Son | — | 19 | ~1921 |
| Loretta Mcdonald | Daughter | — | 10 | ~1930 |
| Jack Mcdonald | Son | — | 7 | ~1933 |
| Mary Mcdonald | Spouse | — | 49 | ~1891 |
| Cathryn Mcdonald | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Pottawattamie, Iowa
Daughter, age 2
Pottawattamie, Iowa · implied b. ~1928 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Helenclare |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Daughter, age 12
Pottawattamie-County, Iowa · implied b. ~1928 — 9 household members
| Surname | McDonald |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Minden Township |
| Occupation | 0 |
| Highest Grade | No 6 |
| 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 Helen Mcdonald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Helen Mcdonald
Daughter · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
Cathryn Mcdonald
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mcdonald
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emmet Mcdonald
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Mcdonald
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Mcdonald
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Mcdonald
Sibling · 1940 · age 7
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 — Pottawattamie-County, Iowa
Open full size
1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01199-00794)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Harmon | 20 | Head | Farm Laborer | Iowa |
| 2 | Frances Harmon | 18 | Wife | Farm Laborer | Iowa |
| 3 | Raymond Harmon | 0 | Son | — | Iowa |
| 4 | Royal W. Felton | 43 | Head | Farmer | Iowa |
| 5 | Alice Felton | 44 | Wife | — | Iowa |
| 6 | Alice May Felton | 17 | Daughter | — | Iowa |
| 7 | Betty Felton | 14 | Daughter | — | Iowa |
| 8 | Lucille Felton | 8 | Daughter | — | Iowa |
| 9 | Royal Jr. Felton | 6 | Son | — | Iowa |
| 10 | Doris Felton | 1 | Daughter | — | Iowa |
| 11 | Lester E. Felton | 38 | Head | Farmer | Iowa |
| 12 | Laura Felton | 33 | Wife | — | Iowa |
| 13 | Ervin Felton | 13 | Son | — | Iowa |
| 14 | Richard Felton | 9 | Son | — | Iowa |
| 15 | Nancy Lou Felton | 7 | Daughter | — | Iowa |
| 16 | Lexington Meadows | 28 | Lodger | Farm Laborer | Iowa |
| 17 | P. J. Mcdonald | 49 | Head | Farming | Iowa |
| 18 | Mary Mcdonald | 49 | Wife | 0 | Iowa |
| 19 | Emmet Mcdonald | 20 | Son | Farming | Iowa |
| 20 | Paul Mcdonald | 19 | Son | U.S. Navy | Iowa |
| 21 | Francis Mcdonald | 17 | Son | 0 | Iowa |
| 22 | Cathryn Mcdonald | 14 | Daughter | 0 | Iowa |
| 23 | Helen Mcdonald THIS PERSON | 12 | Daughter | 0 | Iowa |
| 24 | Loretta Mcdonald | 10 | Daughter | 0 | Iowa |
| 25 | Jack Mcdonald | 7 | Son | 0 | Iowa |
| 26 | John Pieper | 59 | Head | Farming | Iowa |
| 27 | Emma Pieper | 49 | Wife | 0 | Iowa |
| 28 | Elva Howard | 24 | Daughter | Public School | Iowa |
| 29 | Evelyn Howard | 19 | Daughter | 0 | Iowa |
| 30 | Roy Lundell | 43 | Head | Farmer | Iowa |
| 31 | Emma Lundell | 45 | Wife | — | Nebraska |
| 32 | Earl Lundell | 21 | Son | Sailor | Nebraska |
| 33 | Harold Lundell | 18 | Son | Sailor | Canada |
| 34 | Allen Lundell | 9 | Son | — | Iowa |
| 35 | Arthur Christiansen | 26 | Head | Farmer | Iowa |
| 36 | Thelma Christiansen | 23 | Wife | — | Iowa |
| 37 | Robert Christiansen | 1 | Son | — | Iowa |
| 38 | Osborne Hurd | 67 | Head | Farmer | Iowa |
| 39 | Ina Hurd | 59 | Wife | — | Iowa |
| 40 | August Boehler | 35 | Head | Farmer | Iowa |
Related Census Records
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)