JC
John Connolly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jackson-County, Iowa
Our Model Tree links this John Connolly across the 1920, 1930 and 1940 US Censuses in Jackson-County, Iowa (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Iowa |
| Surname | Connolly |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie Springs |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Prairie Springs |
| Est. Birth Year | ~1914 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Minnie Connolly | Spouse | — | 65 | ~1875 |
| John Connolly | Son | — | 26 | ~1914 |
| John Connolly | Head | — | 69 | ~1871 |
Census Appearances
1920
Jackson, Iowa
Son, age 5
Jackson, Iowa · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Son, age 16
Jackson, Iowa · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connelly |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Jackson-County, Iowa
Son, age 26
Jackson-County, Iowa · implied b. ~1914 — 3 household members
| Surname | Connolly |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie Springs |
| 1935 Residence (County) | Jackson |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Connolly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Connolly (~0.92 confidence) and father John Connolly (~0.92 confidence) and mother Minnie Connolly (~0.92 confidence) and mother Minnie Connolly (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Connolly
b. ~1871
Source father
● Household
· direct · ~0.92
Father
John Connolly
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Minnie Connolly
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Minnie Connolly
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Connolly
Son · 1940 · age 26 · b. ~1914 · 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 — Jackson-County, Iowa
Open full size
1940 US Federal Census — Jackson-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01168-00954)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Veronica Kasmer | 10 | Daughter | — | Iowa |
| 2 | Lawrence Kasmer | 9 | Son | — | Iowa |
| 3 | Dorothy Kasmer | 6 | Daughter | — | Iowa |
| 4 | Mary Jane Kasmer | 4 | Daughter | — | Iowa |
| 5 | Idenus Mueller | 63 | Head | Farmer | Iowa |
| 6 | Mary A Mueller | 52 | Wife | — | Iowa |
| 7 | O'Linda Mueller | 18 | Daughter | — | Iowa |
| 8 | Raymond Mueller | 21 | Son | Farm Labor | Iowa |
| 9 | Edna Geber | 69 | Mother in L | — | Iowa |
| 10 | Ted Duehr | 59 | Head | Farmer | Iowa |
| 11 | Susan Duehr | 56 | Wife | — | Iowa |
| 12 | Harvey Duehr | 26 | Son | Farm Labor | Iowa |
| 13 | Anthony Duehr | 21 | Son | Farm Labor | Iowa |
| 14 | John F Connolly | 69 | Head | Farmer | Iowa |
| 15 | Minnie Connolly | 65 | Wife | — | Iowa |
| 16 | John P Connolly THIS PERSON | 26 | Son | Farmer | Iowa |
| 17 | Cornelius O'Boyle | 75 | Head | Farmer | Iowa |
| 18 | Mary A O'Boyle | 66 | Wife | — | Iowa |
| 19 | Charles W O'Boyle | 35 | Son | Farm Labor | Iowa |
| 20 | Dennis Enerdit | 40 | Head | Farmer | Iowa |
| 21 | Mary Enerdit | 40 | Wife | — | Iowa |
| 22 | James Enerdit | 12 | Son | — | Iowa |
| 23 | Eugene Enerdit | 10 | Son | — | Iowa |
| 24 | Janell Enerdit | 7 | Daughter | — | Iowa |
| 25 | Richard Enerdit | 4 | Son | — | Iowa |
| 26 | Peter Kies | 70 | Head | Farmer | Iowa |
| 27 | Elizabeth Kies | 68 | Wife | — | Iowa |
| 28 | Henry N Becken | 49 | Head | Farmer | Iowa |
| 29 | Laura Becken | 40 | Wife | — | Iowa |
| 30 | Merlin Becken | 20 | Son | Farm Labor | Iowa |
| 31 | Melvin Becken | 18 | Son | Farm Labor | Iowa |
| 32 | Raymond Becken | 3 | Son | — | Iowa |
| 33 | Ralph Scherkel | 34 | Head | Farmer | Iowa |
| 34 | Raymond Even | 30 | Head | Farmer | Iowa |
| 35 | Agnes Even | 30 | Wife | — | Iowa |
| 36 | Robert Even | 5 | Son | — | Iowa |
| 37 | Donald Even | 2 | Son | 0 | Iowa |
| 38 | Leo H Nemmers | 46 | Head | Farmer | Iowa |
| 39 | Christina Nemmers | 42 | Wife | — | Iowa |
| 40 | Francis Nemmers | 18 | Son | Farm Labor | Iowa |
Related Census Records
Pedigree Summary
John
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)