MR
Mary Russell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Webster-County, Iowa
Our Model Tree links this Mary Russell across the 1930 and 1940 US Censuses in Webster-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 12-person household.
Age 10
b. ~1930
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Webster-County, Iowa |
| Surname | Russell |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Johnson |
| 1935 Residence (County) | Webster |
| Additional Details | |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Johnson |
| Est. Birth Year | ~1930 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Russell | Daughter | — | 10 | ~1930 |
| Patricia Russell | Daughter | — | 9 | ~1931 |
| Kathleen Russell | Daughter | — | 12 | ~1928 |
| Johanna Russell | Daughter | — | 2 | ~1938 |
| Barbara Russell | Daughter | — | 14 | ~1926 |
| Elaine Russell | Daughter | — | 16 | ~1924 |
| Emmett Russell | Head | — | 42 | ~1898 |
| William Russell | Son | — | 6 | ~1934 |
| Robert Russell | Son | — | 18 | ~1922 |
| Jerome Russell | Son | — | 5 | ~1935 |
| Patrick Russell | Son | — | 9 | ~1931 |
| Marie Russell | Spouse | — | 36 | ~1904 |
Census Appearances
1930
Webster, Iowa
Daughter, age
Webster, Iowa · implied b. ~1930 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Russell |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Webster-County, Iowa
Daughter, age 10
Webster-County, Iowa · implied b. ~1930 — 12 household members
| Surname | Russell |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Johnson |
| 1935 Residence (County) | Webster |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 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 Russell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Russell
Daughter · 1940 · age 10 · b. ~1930 · Iowa
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Sibling
Robert Russell
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerome Russell
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Russell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Russell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Johanna Russell
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Russell
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elaine Russell
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Russell
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Russell
Sibling · 1940 · age 12
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 — Webster-County, Iowa
Open full size
1940 US Federal Census — Webster-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01212-00366)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Dugan | 52 | Head | Farmer | Iowa |
| 42 | Frank Dugan | 50 | Head | Farmer | Iowa |
| 43 | William Dugan | 48 | Brother | Farmer | Iowa |
| 44 | Mary Dugan | 55 | Sister | — | Iowa |
| 45 | U. A. Lentsch | 49 | Head | Farmer | Iowa |
| 46 | Emma Lentsch | 50 | Wife | — | Iowa |
| 47 | Irene Lentsch | 16 | Daughter | — | Iowa |
| 48 | Howard Lentsch | 6 | Son | — | Iowa |
| 49 | Joseph Frisch | 23 | Son-in-law | Farm Hand | Iowa |
| 50 | Blanche Frisch | 24 | Daughter | — | Iowa |
| 51 | Mary Slama | 92 | Mother-in-law | — | Germany |
| 52 | Emmett Russell | 42 | Head | Farmer | Iowa |
| 53 | Marie Russell | 36 | Wife | — | Iowa |
| 54 | Robert Russell | 18 | Son | — | Iowa |
| 55 | Elaine Russell | 16 | Daughter | — | Iowa |
| 56 | Barbara Russell | 14 | Daughter | — | Iowa |
| 57 | Kathleen Russell | 12 | Daughter | — | Iowa |
| 58 | Mary Lou Russell THIS PERSON | 10 | Daughter | — | Iowa |
| 59 | Patricia Russell | 9 | Daughter | — | Iowa |
| 60 | Patrick Russell | 9 | Son | — | Iowa |
| 61 | William Russell | 6 | Son | — | Iowa |
| 62 | Jerome Russell | 5 | Son | — | Iowa |
| 63 | Johanna Russell | 2 | Daughter | — | Iowa |
| 64 | Donald Krebs | 22 | Head | Farmer | Iowa |
| 65 | Victor Smith | 40 | Head | Farmer | South Dakota |
| 66 | Nancy Smith | 77 | Mother | — | Iowa |
| 67 | Edmond Gillespie | 27 | Head | Farmer | Iowa |
| 68 | Florence Gillespie | 25 | Wife | — | Iowa |
| 69 | Albert Benoit | 65 | Father-in-law | Janitor | Iowa |
| 70 | John King | 58 | Head | Farmer | Illinois |
| 71 | Lucian King | 53 | Wife | — | Missouri |
| 72 | John Baker | 14 | Grandson | — | Iowa |
| 73 | Alberta Baker | 11 | Granddaughter | — | Iowa |
| 74 | James Dawson | 52 | Farm Hand | Farm Hand | Irish Free State |
| 75 | George W. Davis | 64 | Head | Farmer | Illinois |
| 76 | Grace D. Davis | 60 | Wife | — | Iowa |
| 77 | Thomas Davis | 30 | Son | Farmer | Iowa |
| 78 | Louis M. Davis | 19 | Son | Carpenter | Iowa |
| 79 | Margaret Condon | 67 | Head | — | Iowa |
| 80 | Carl Condon | 28 | Son | 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)