MH
Mary Hickman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lyon-County, Iowa
Our Model Tree links this Mary Hickman across the 1930 and 1940 US Censuses in Lyon-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 6-person household.
Age 14
b. ~1926
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lyon-County, Iowa |
| Surname | Hickman |
| Given Name | Mary Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Doon Town |
| 1935 Residence (County) | Lyon |
| Additional Details | |
| Highest Grade | G 7 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Doon Town |
| Est. Birth Year | ~1926 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Marie Hickman | Spouse | — | 44 | ~1896 |
| Helen Hickman | Daughter | — | 9 | ~1931 |
| Mary Hickman | Daughter | — | 14 | ~1926 |
| Harry Hickman | Head | — | 50 | ~1890 |
| Wayne Hickman | Son | — | 21 | ~1919 |
| Audrey Hickman | Daughter | — | 25 | ~1915 |
Census Appearances
1930
Lyon, Iowa
Daughter, age 4
Lyon, Iowa · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hickman |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Lyon-County, Iowa
Daughter, age 14
Lyon-County, Iowa · implied b. ~1926 — 6 household members
| Surname | Hickman |
| Given Name | Mary Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Doon Town |
| 1935 Residence (County) | Lyon |
| Highest Grade | G 7 |
| 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 Hickman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hickman
Daughter · 1940 · age 14 · b. ~1926 · Iowa
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Sibling
Helen Hickman
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audrey Hickman
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Hickman
Sibling · 1940 · age 21
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 — Lyon-County, Iowa
Open full size
1940 US Federal Census — Lyon-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01179-00399)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Minnie Patton | 71 | Mother-in-law | — | Illinois |
| 42 | Gerald Busch | 22 | Head | Clerk | Iowa |
| 43 | Verna Busch | 22 | Wife | — | Minn. |
| 44 | Danny George Busch | 2 | Son | — | Iowa |
| 45 | James Elwin Busch | 1 | Son | — | Minn. |
| 46 | Martin Wissink | 32 | Head | Carpenter | Iowa |
| 47 | Lillian Wissink | 32 | Wife | — | Iowa |
| 48 | Melvin Wissink | 10 | Son | — | Iowa |
| 49 | Betty Wissink | 8 | Daughter | — | Iowa |
| 50 | Delmer Wissink | 5 | Son | — | Iowa |
| 51 | Erwin Harkstra | 25 | Head | Welder | Iowa |
| 52 | Myra Harkstra | 19 | Wife | — | Iowa |
| 53 | Myrna Harkstra | 0 | Daughter | — | Iowa |
| 54 | Lauren Dunkelberger | 37 | Head | Salesman | Penn. |
| 55 | Ruth Dunkelberger | 22 | Wife | — | Iowa |
| 56 | Harold Dunkelberger | 42 | Head | Patrolman | Penn. |
| 57 | Margaret Dunkelberger | 40 | Wife | — | Penn. |
| 58 | George Dunkelberger | 66 | Father | — | Penn. |
| 59 | Neva Dunkelberger | 4 | Daughter | — | Iowa |
| 60 | Ed Dunkelberger | 33 | Head | Carpenter | Iowa |
| 61 | Bernice Dunkelberger | 30 | Wife | — | Iowa |
| 62 | Billy Dunkelberger | 8 | Son | — | Iowa |
| 63 | Alver Sedlbom | 56 | Head | Mason | Sweden |
| 64 | Lillian Sedlbom | 44 | Wife | — | Iowa |
| 65 | Lyle Sedlbom | 23 | Son | Mason | Iowa |
| 66 | Orville Mason | 43 | Head | Painter | Nebraska |
| 67 | Betty Mason | 41 | Wife | — | Iowa |
| 68 | Minnie Detley | 25 | Niece | Stenographer | Iowa |
| 69 | Mattie Flosken | 50 | Head | Laundress | Iowa |
| 70 | Larry Flosken | 25 | Son | Assistant Man | Iowa |
| 71 | Harry Hickman | 50 | Head | — | Iowa |
| 72 | Marie Hickman | 44 | Wife | — | Iowa |
| 73 | Audrey Hickman | 25 | Daughter | — | Iowa |
| 74 | Wayne Hickman | 21 | Son | New Worker | Iowa |
| 75 | Mary Ruth Hickman THIS PERSON | 14 | Daughter | — | Iowa |
| 76 | Helen Hickman | 9 | Daughter | — | Iowa |
| 77 | Walter Warinner | 33 | Head | Mechanic | Minn. |
| 78 | Lenore Warinner | 36 | Wife | — | Minn. |
| 79 | Carol Jane Warinner | 4 | Daughter | — | Iowa |
| 80 | Larry James Warinner | 1 | Son | — | Iowa |
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)