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John Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this John Mahoney across the 1920, 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 5-person household.
Age 53
b. ~1887
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Teacher Pub Sch |
| Industry | Public School Woodbury Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1620 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Teacher Pub Sch |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1887 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Mahoney | Daughter | — | 15 | ~1925 |
| Helen Mahoney | Daughter | — | 8 | ~1932 |
| John Mahoney | Head | — | 53 | ~1887 |
| Robert Mahoney | Son | — | 17 | ~1923 |
| Bertha Mahoney | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Woodbury, Iowa
Head, age 32
Woodbury, Iowa · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahany |
| Given Name | John R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1908 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Asst Foreman |
| Industry | Wood Works |
| Class of Worker | S |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | England |
| Year of Naturalization | 1919 |
| Birthplace (normalized) | england |
1930
Woodbury, Iowa
Head, age 42
Woodbury, Iowa · implied b. ~1888 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahaney |
| Given Name | John R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1908 |
| Age at First Marriage | 32 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 7000 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Woodbury-County, Iowa
Head, age 53
Woodbury-County, Iowa · implied b. ~1887 — 5 household members
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Naturalization Status | Naturalized |
| Occupation | Teacher Pub Sch |
| Industry | Public School Woodbury Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1620 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mahoney
Head · 1940 · age 53 · b. ~1887 · Iowa
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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
38 people indexed on this census page (nara:1940:m-t0627-01214-00743)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joe Burbank | 34 | Son-in-law | Operator Delivery Truck | Nebraska |
| 2 | Mary D Burbank | 25 | Daughter | Operator Delivery Truck | Iowa |
| 3 | Warren Lewis | 30 | Head | Furniture Salesman | Iowa |
| 4 | Charlotte Lewis | 30 | Wife | Cashier | Nebraska |
| 5 | Dave Johnson | 49 | Head | Stereotypist | Minnesota |
| 6 | Geneva Johnson | 42 | Wife | — | Minnesota |
| 7 | Charles W Corkhill | 56 | Head | Manager Broadcstg Station | Iowa |
| 8 | Lola Mae Corkhill | 52 | Wife | — | Kansas |
| 9 | Charles W Jr Corkhill | 26 | Son | Radio Announcer | Illinois |
| 10 | Helen E Corkhill | 24 | Daughter | Teacher High School | Illinois |
| 11 | Miriam L Corkhill | 22 | Daughter | Stenographer | Illinois |
| 12 | Stanley E Corkhill | 16 | Son | — | Iowa |
| 13 | Harold F Corkhill | 14 | Son | — | Iowa |
| 14 | Leonard E Corkhill | 13 | Son | — | Iowa |
| 15 | Phyllis G Corkhill | 11 | Daughter | — | Iowa |
| 16 | Rowe Trower | 35 | Head | Bookkeeper | Iowa |
| 17 | Pearl Trower | 27 | Wife | — | Nebraska |
| 18 | Marie Trower | 28 | Sister | Stenographer | Iowa |
| 19 | Floyd C Copeland | 41 | Head | Automobile Salesman | Iowa |
| 20 | Ruby D Copeland | 40 | Wife | — | Iowa |
| 21 | Fred H Schalinske | 32 | Head | Embalmer Undertaker | So Dakota |
| 22 | Lucile Schalinske | 35 | Wife | Dental Assistant | So Dakota |
| 24 | Carl Graves | 54 | Head | Telephone Repair | Nebraska |
| 25 | Nettie Graves | 53 | Wife | — | Nebraska |
| 26 | John Mahoney THIS PERSON | 53 | Head | Teacher Pub Sch | England |
| 27 | Bertha Mahoney | 43 | Wife | — | Iowa |
| 28 | Robert Mahoney | 17 | Son | — | Iowa |
| 29 | Dorothy Mahoney | 15 | Daughter | — | Iowa |
| 30 | Helen Mahoney | 8 | Daughter | — | Iowa |
| 31 | Fred Fogel | 57 | Head | Auto Electrician | Michigan |
| 32 | Isabella Fogel | 46 | Wife | — | Iowa |
| 33 | Robert Jackson | 37 | Head | Assistant Adjuster | Iowa |
| 34 | Veda Jackson | 35 | Wife | — | Iowa |
| 35 | Robert Jackson | 10 | Son | — | Iowa |
| 36 | Ned Jackson | 4 | Son | — | Iowa |
| 37 | Margaret Gray | 48 | Maid | Domestic | Iowa |
| 38 | George Buswell | 30 | Head | Retail Grocery Sales Clerk | Iowa |
| 39 | Georgina Buswell | 33 | Wife | Retail Dry Goods Sales Clerk | 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)