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John Shea — 1940 US Census Record
Model Tree available1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this John Shea across the 1920, 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Shea |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Additional Details | |
| Occupation | Office Clerk |
| Industry | Meat Packing Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1230 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Office Clerk |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1912 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Shea | Head | — | 64 | ~1876 |
| John Shea | Son | — | 28 | ~1912 |
| Robert Shea | Son | — | 24 | ~1916 |
| Mary Shea | Spouse | — | 64 | ~1876 |
Census Appearances
1920
Woodbury, Iowa
Son, age 6
Woodbury, Iowa · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shea |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Woodbury, Iowa
Son, age 16
Woodbury, Iowa · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shea |
| Given Name | John G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Woodbury-County, Iowa
Son, age 28
Woodbury-County, Iowa · implied b. ~1912 — 4 household members
| Surname | Shea |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Occupation | Office Clerk |
| Industry | Meat Packing Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1230 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| 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 Shea across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Shea (~0.92 confidence) and father John Shea (~0.92 confidence) and father John Shea (~0.92 confidence) and mother Mary Shea (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Shea
b. ~1875
Source father
● Household
· direct · ~0.92
Father
John Shea
b. ~1875
Source father
● Household
· direct · ~0.92
Father
John Shea
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Mary Shea
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Shea
Son · 1940 · age 28 · b. ~1912 · Iowa
★ You are viewing this record
Sibling
Robert Shea
Sibling · 1940 · age 24
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 — Woodbury-County, Iowa
Open full size
1940 US Federal Census — Woodbury-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01215-00358)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John O'Connor | 56 | Head | Asst Ticket Agt | Iowa |
| 42 | Florence L O'Connor | 44 | Wife | — | So Dakota |
| 43 | Siverine Hendrickson | 57 | Head | Traffic Mgr | So Dakota |
| 44 | Daphne Q Hendrickson | 57 | Wife | — | So Dakota |
| 45 | Quentin Hendrickson | 24 | Son | Adjuster | So Dakota |
| 46 | Amy Dean Hendrickson | 20 | Son | Salesman | Iowa |
| 47 | Marian Brugger | 36 | Lodger | Bookkeeper | Iowa |
| 48 | Vera Whalen | 36 | Lodger | Bookkeeper | No Dakota |
| 49 | Margaret Morrison | 65 | Head | — | Iowa |
| 50 | Agnes B Mcdermott | 70 | Head | — | Iowa |
| 51 | Teresa Mcdermott | 34 | Daughter | Receiving Teller | Iowa |
| 52 | Emily Olson | 67 | Head | Manager | Nebraska |
| 53 | Donald Rasmussen | 22 | Lodger | Bookkeeper | Iowa |
| 54 | Frank Lucas | 21 | Lodger | Truck Driver | Nebraska |
| 55 | Allen Lucas | 33 | Lodger | Body & Fender Worker | Hungary |
| 56 | Lillace Hopp | 43 | Lodger | Saleslady | Iowa |
| 57 | Esther Mclaughlin | 35 | Lodger | Office Nurse | Iowa |
| 58 | Max Rasmussen | 22 | Lodger | Money | Iowa |
| 59 | Opal Johnson | 28 | Lodger | Stenographer | So. Dak. |
| 60 | Kathryn Kempf | 22 | Lodger | Stenographer | So Dak |
| 61 | Ray Aronson | 31 | Lodger | Chief Clerk | Minnesota |
| 62 | Melvin Brown | None | Lodger | — | — |
| 63 | Ruth Epstein | 34 | Head | Mgr. Dept. | New York |
| 64 | Marylee Epstein | 14 | Daughter | — | Iowa |
| 65 | Shirley Epstein | 12 | Daughter | — | Iowa |
| 66 | Ray Epstein | 10 | Son | — | Iowa |
| 67 | Riva Epstein | 8 | Daughter | — | Iowa |
| 68 | Frank Baron | 74 | Father | Real Estate Broker | Russia |
| 69 | John Shea | 64 | Head | Salesman | Iowa |
| 70 | Mary Shea | 64 | Wife | — | Iowa |
| 71 | John Shea THIS PERSON | 28 | Son | Office Clerk | Iowa |
| 72 | Robert Shea | 24 | Son | Post Office Clerk | Iowa |
| 73 | Catherine Waters | 85 | Head | — | New Hampshire |
| 74 | Margaret Q Hennessy | 51 | Daughter | — | Iowa |
| 75 | Isabel Waters | 48 | Daughter | Bookkeeping | Iowa |
| 76 | Anne Branigan | 47 | Niece | Bookkeeping | Iowa |
| 77 | Gertrude Sullivan | 45 | Niece | Saleslady | Iowa |
| 78 | Hannah Gordon | 60 | Head | General Inspector | Missouri |
| 79 | Lucille Gordon | 34 | Daughter | Stenographer | Iowa |
| 80 | George Gordon | 26 | Son | Misc Bookkeeper | Washington |
Related Census Records
Pedigree Summary
John + 1 sibling
Gen 1 · 4 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)