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John Murphy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clinton-County, Iowa
Our Model Tree links this John Murphy across the 1920, 1930 and 1940 US Censuses in Clinton-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Elizabeth — first a head (b.~1898), then head of a 7-person household.
Age 42
b. ~1898
Male
Head
Born: Iowa
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Iowa |
| Surname | Murphy |
| Given Name | John R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Occupation | Air Brakeman |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Air Brakeman |
| Township / Ward | Clinton City |
| Est. Birth Year | ~1898 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Shirley Murphy | Daughter | — | 7 | ~1933 |
| Betty Murphy | Daughter | — | 15 | ~1925 |
| Mary Murphy | Daughter | — | 13 | ~1927 |
| Carol Murphy | Daughter | — | 5 | ~1935 |
| John Murphy | Head | — | 42 | ~1898 |
| John Murphy | Son | — | 11 | ~1929 |
| Patrick Murphy | Son | — | 9 | ~1931 |
Census Appearances
1920
Clinton, Iowa
Son, age 22
Clinton, Iowa · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | John R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Car Tester |
| Industry | Steam Railway |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clinton, Iowa
Head, age 31
Clinton, Iowa · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | John R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 25 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Air Brake Inspector |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Head, age 42
Clinton-County, Iowa · implied b. ~1898 — 7 household members
| Surname | Murphy |
| Given Name | John R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Occupation | Air Brakeman |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 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 John Murphy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Murphy (~0.92 confidence) and mother Elizabeth Murphy (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Murphy
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Murphy
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Murphy
Head · 1940 · age 42 · b. ~1898 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Clinton-County, Iowa
Open full size
1940 US Federal Census — Clinton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01150-00546)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Samuel H Holt | 55 | Head | Millwright | Iowa |
| 2 | Alice M Holt | 50 | Wife | — | Iowa |
| 3 | Wilbur S Holt | 27 | Son | Egg Packer | Iowa |
| 4 | Virginia A Holt | 21 | Daughter | Mangle Operator | Iowa |
| 5 | Charles W Holt | 12 | Son | — | Iowa |
| 6 | Norma L Holt | 9 | Daughter | — | Iowa |
| 7 | Richard L Holt | 6 | Son | — | Iowa |
| 8 | Etta C Lyons | 62 | Head | — | Indiana |
| 9 | Elbert F Walker | 54 | Head | Cobbler | South Dakota |
| 10 | Merritt E Ellinwood | 55 | Head | Painter And Paperhanger | Iowa |
| 11 | Beulah V Ellinwood | 47 | Wife | — | Iowa |
| 12 | Robert G Ellinwood | 18 | Son | Messenger Boy | Iowa |
| 13 | Marion L Ellinwood | 17 | Daughter | New Worker | Iowa |
| 14 | Paul G Ellinwood | 15 | Son | — | Iowa |
| 15 | Patricia L Ellinwood | 11 | Daughter | — | Iowa |
| 16 | Thomas S Holt | 82 | Head | — | England |
| 17 | Anna L Holt | 77 | Wife | — | Iowa |
| 18 | Albert Holt | 52 | Son | Painter And Paperhanger | Iowa |
| 19 | Axel B Nissen | 45 | Head | Feed Trucker | Iowa |
| 20 | John D Scullen | 78 | Head | — | Illinois |
| 21 | Earl Martin | 39 | Head | Salesman | Iowa |
| 22 | Mildred A Martin | 25 | Wife | — | Iowa |
| 23 | Alice V Martin | 3 | Daughter | — | Iowa |
| 24 | Robert S Martin | 2 | Son | — | Iowa |
| 25 | Gerald E Martin | 0 | Son | — | Iowa |
| 26 | Thomas Herrity | 78 | Head | — | Iowa |
| 27 | Emma E Herrity | 66 | Wife | — | Iowa |
| 28 | George B Heddinghaus | 61 | Head | — | Missouri |
| 29 | Emma E Heddinghaus | 59 | Wife | — | Minnesota |
| 30 | John R Murphy THIS PERSON | 42 | Head | Air Brakeman | Iowa |
| 31 | Betty L Murphy | 15 | Daughter | — | Iowa |
| 32 | Mary E Murphy | 13 | Daughter | — | Iowa |
| 33 | John R Murphy | 11 | Son | — | Iowa |
| 34 | Patrick J Murphy | 9 | Son | — | Iowa |
| 35 | Shirley A Murphy | 7 | Daughter | — | Iowa |
| 36 | Carol M Murphy | 5 | Daughter | — | Iowa |
| 37 | Jacob Norman | 46 | Head | Letter Carrier | Holland |
| 38 | Bertha A Norman | 44 | Wife | — | Illinois |
| 39 | Hubert W Norman | 17 | Son | — | Iowa |
| 40 | Delmar J Norman | 15 | Son | — | Iowa |
Pedigree Summary
John
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)