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Mary Murdock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marshall-County, Iowa
Our Model Tree links this Mary Murdock across the 1930 and 1940 US Censuses in Marshall-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 6-person household.
Age 11
b. ~1929
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marshall-County, Iowa |
| Surname | Murdock |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Marietta Township |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Marietta Township |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| Mary Murdock | Daughter | — | 11 | ~1929 |
| Alfred Murdock | Head | — | 45 | ~1895 |
| Amanda Murdock | Spouse | — | 43 | ~1897 |
| Margaret Murdock | Daughter | — | 3 | ~1937 |
| Robert Murdock | Son | — | 14 | ~1926 |
| Edna Murdock | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Marshall, Iowa
Daughter, age 2
Marshall, Iowa · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murdock |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Marshall-County, Iowa
Daughter, age 11
Marshall-County, Iowa · implied b. ~1929 — 6 household members
| Surname | Murdock |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Marietta Township |
| Hours Worked | 0 |
| Income (1939) | 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 Mary Murdock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Murdock
Daughter · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Edna Murdock
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Murdock
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Murdock
Sibling · 1940 · 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
1940 US Federal Census — Marshall-County, Iowa
Open full size
1940 US Federal Census — Marshall-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01182-00315)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lois Gouch | 20 | Daughter | Student | Iowa |
| 2 | Fred Kitchen | 59 | Head | Laborer | England |
| 3 | Emma Kitchen | 57 | Wife | — | Iowa |
| 4 | Clyde Kitchen | 19 | Son | Laborer | Iowa |
| 5 | Charlotte Kitchen | 21 | Daughter | — | Iowa |
| 6 | Alfred Murdock | 45 | Head | Farmer | Illinois |
| 7 | Amanda Murdock | 43 | Wife | — | Iowa |
| 8 | Robert Lee Murdock | 14 | Son | — | Iowa |
| 9 | Mary E. Murdock THIS PERSON | 11 | Daughter | — | Iowa |
| 10 | Edna Rose Murdock | 6 | Daughter | — | Iowa |
| 11 | Margaret J. Murdock | 3 | Daughter | — | Iowa |
| 12 | Edward Ballentine | 49 | Head | Farmer | Iowa |
| 13 | Inez V. Ballentine | 47 | Wife | — | Iowa |
| 14 | Ruth Ballentine | 21 | Daughter | Student | Iowa |
| 15 | Richard J. Ballentine | 16 | Son | — | Iowa |
| 16 | Mary P. Ballentine | 14 | Daughter | — | Iowa |
| 17 | Richard H. Teter | 81 | Father-in-law | Retired | Indiana |
| 18 | George Nichols | 29 | Laborer | Laborer | Iowa |
| 19 | Ernest Ballentine | 37 | Head | Salesman | Iowa |
| 20 | Gertie M. Ballentine | 37 | Wife | — | Iowa |
| 21 | Geraldine M. Ballentine | 11 | Daughter | — | Iowa |
| 22 | Ruth Gretely|Gretly | 27 | Lodger | Teacher | Iowa |
| 23 | Sam S. Yetter | 77 | Head | Farmer | Pennsylvania |
| 24 | Lizzie Yetter | 73 | Wife | — | Germany |
| 25 | Caroline Yetter | 33 | Daughter | — | Iowa |
| 26 | George Yetter | 36 | Son | Laborer | Iowa |
| 27 | Helen Yetter | 32 | Wife | — | Iowa |
| 28 | Margaret M. Yetter | 12 | Daughter | — | Iowa |
| 29 | Barbara A. Yetter | 2 | Daughter | — | Iowa |
| 30 | Irvin W. Pieper | 56 | Head | Dairyman | Illinois |
| 31 | Verna L. Pieper | 42 | Wife | — | Iowa |
| 32 | Robert S. Pieper | 14 | Son | — | Iowa |
| 33 | Vernon Stubbs | 52 | Head | Farmer | Iowa |
| 34 | Gail A. Stubbs | 42 | Wife | — | Iowa |
| 35 | Phineas W. Stubbs | 9 | Son | — | Iowa |
| 36 | Dale Wilhelmi | 29 | Head | Laborer | Iowa |
| 37 | Ruth Wilhelmi | 21 | Wife | — | Iowa |
| 38 | Harold Stubbs | 34 | Head | Farmer | Iowa |
| 39 | Margaret H. Stubbs | 20 | Wife | — | Iowa |
| 40 | Deloris A. Stubbs | 4 | Daughter | — | 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)