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Martha Murphy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Warren-County, Iowa
Our Model Tree links this Martha Murphy across the 1930 and 1940 US Censuses in Warren-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 | Warren-County, Iowa |
| Surname | Murphy |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Palmyra Twp |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Highest Grade | G 6 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Palmyra Twp |
| 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 Martha | Age | Birth yr |
|---|---|---|---|---|
| Ruby Murphy | Daughter | — | 10 | ~1930 |
| James Murphy | Head | — | 37 | ~1903 |
| Clesta Murphy | Spouse | — | 37 | ~1903 |
| Martha Murphy | Daughter | — | 11 | ~1929 |
| James Murphy | Son | — | 14 | ~1926 |
| Betty Murphy | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Warren, Iowa
Daughter, age 2
Warren, Iowa · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Martha |
| 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
Warren-County, Iowa
Daughter, age 11
Warren-County, Iowa · implied b. ~1929 — 6 household members
| Surname | Murphy |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Palmyra Twp |
| 1935 Residence (County) | Warren |
| Highest Grade | G 6 |
| 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 Martha Murphy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Murphy
Daughter · 1940 · age 11 · b. ~1929 · Iowa
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Sibling
Ruby Murphy
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Murphy
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Murphy
Sibling · 1940 · age 6
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 — Warren-County, Iowa
Open full size
1940 US Federal Census — Warren-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01210-00301)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Holman Chaplin | 46 | Head | Farming | Iowa |
| 2 | Eva May Chaplin | 21 | Daughter | House Keeper | Iowa |
| 3 | Calvin Chaplin | 11 | Son | — | Iowa |
| 4 | Bobby Chaplin | 4 | Son | — | Iowa |
| 5 | Charles Craig | 32 | Head | Farming | Iowa |
| 6 | Alice Craig | 34 | Wife | House Wife | Iowa |
| 7 | Howard Craig | 5 | Son | — | Iowa |
| 8 | Dora Nettie Butterfield | 73 | Head | Carpenter | Iowa |
| 9 | Ross Evans | 46 | Head | Wpa Worker | Iowa |
| 10 | Ivy Evans | 43 | Wife | House Wife | Indiana |
| 11 | Lloyd Evans | 23 | Son | Laborer | Iowa |
| 12 | Roy Evans | 16 | Son | Laborer | Iowa |
| 13 | William Halterman | 46 | Head | Farming | Iowa |
| 14 | Edna Halterman | 43 | Wife | House Wife | Iowa |
| 15 | Roy Black | 49 | Head | Farming | Iowa |
| 16 | Gertie Black | 44 | Wife | House Wife | Iowa |
| 17 | Louise Black | 11 | Daughter | — | Iowa |
| 18 | William Black | 6 | Son | — | Iowa |
| 19 | Tracy Butler | 23 | Hand | Farm Hand | Kansas |
| 20 | James Ellis | 69 | Head | Farming | Iowa |
| 21 | Margaret Ellis | 63 | Wife | House Wife | Ill |
| 22 | Frank Popejoy | 87 | Head | Unable To Work | Ill |
| 23 | Louisa Popejoy | 78 | Wife | House Wife | Iowa |
| 24 | Iris Middle | 63 | Head | House Keeper | Iowa |
| 25 | Francis Blake | 55 | Head | Laborer | Iowa |
| 26 | Mildred Blake | 37 | Wife | House Wife | Iowa |
| 27 | Lloyd Elson|Etson | 47 | Head | Farming | Nebraska |
| 28 | Verna Elson|Etson | 47 | Wife | House Wife | Iowa |
| 29 | Bessie Gardner | 49 | Wife | House Wife | Iowa |
| 30 | Betty Mae Gardner | 15 | Daughter | — | Iowa |
| 31 | Nancy Gardner | 7 | Daughter | — | Iowa |
| 32 | Gerald Coon | 62 | Head | Carpenter | Iowa |
| 33 | Corie Coon | 53 | Wife | House Wife | Iowa |
| 34 | James Murphy | 37 | Head | Farm Hand | Iowa |
| 35 | Clesta Murphy | 37 | Wife | House Wife | Iowa |
| 36 | James Murphy | 14 | Son | — | Iowa |
| 37 | Martha Murphy THIS PERSON | 11 | Daughter | — | Iowa |
| 38 | Ruby Murphy | 10 | Daughter | — | Iowa |
| 39 | Betty Murphy | 6 | Daughter | — | Iowa |
| 40 | Don Reynolds | 44 | Head | Farming | 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)