JF
John Fitzgerald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Porter-County, Indiana
Our Model Tree links this John Fitzgerald across the 1910, 1920, 1930 and 1940 US Censuses in Porter-County, Indiana (XGBoost, ~Confirmed), with identified parents John & Bridget — first a son (b.~1909), then head of a 8-person household.
Age 31
b. ~1909
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Porter-County, Indiana |
| Surname | Fitzgerald |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Porter |
| 1935 Residence (County) | Porter |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | NP |
| Hours Worked | 80 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Farmer |
| Township / Ward | Porter |
| Est. Birth Year | ~1909 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Winifred Fitzgerald | Daughter | — | 26 | ~1914 |
| Mary Fitzgerald | Daughter | — | 28 | ~1912 |
| Ella Fitzgerald | Daughter | — | 19 | ~1921 |
| John Fitzgerald | Head | — | 61 | ~1879 |
| Joseph Fitzgerald | Son | — | 15 | ~1925 |
| John Fitzgerald | Son | — | 31 | ~1909 |
| Thomas Fitzgerald | Son | — | 22 | ~1918 |
| Bridget Fitzgerald | Spouse | — | 56 | ~1884 |
Census Appearances
1910
Porter, Indiana
Son, age 2
Porter, Indiana · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ireland |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Porter, Indiana
Son, age 11
Porter, Indiana · implied b. ~1909 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Porter, Indiana
Son, age 21
Porter, Indiana · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | John J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| Age at First Marriage | W |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ireland |
| Occupation | labourer |
| Industry | Farm |
| Class of Worker | VIVV |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Porter-County, Indiana
Son, age 31
Porter-County, Indiana · implied b. ~1909 — 8 household members
| Surname | Fitzgerald |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Porter |
| 1935 Residence (County) | Porter |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | NP |
| Hours Worked | 80 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Fitzgerald across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Fitzgerald (~0.92 confidence) and mother Bridget Fitzgerald (~0.92 confidence) and father John Fitzgerald (~0.92 confidence) and father John Fitzgerald (~0.92 confidence) and father John Fitzgerald (~0.92 confidence) and mother Bridget Fitzgerald (~0.92 confidence) and mother Bridget Fitzgerald (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Fitzgerald
b. ~1849
Source father
● Household
· direct · ~0.92
Mother
Bridget Fitzgerald
b. ~1865
Source mother
● Household
· direct · ~0.92
Father
John Fitzgerald
b. ~1877
Source father
● Household
· direct · ~0.92
Father
John Fitzgerald
b. ~1878
Source father
● Household
· direct · ~0.92
Father
John Fitzgerald
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Bridget Fitzgerald
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Bridget Fitzgerald
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Fitzgerald
Son · 1940 · age 31 · b. ~1909 · Indiana
★ You are viewing this record
Sibling
Joseph Fitzgerald
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Fitzgerald
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Fitzgerald
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Fitzgerald
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Winifred Fitzgerald
Sibling · 1940 · age 26
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 — Porter-County, Indiana
Open full size
1940 US Federal Census — Porter-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01086-00647)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Pittman | 8 | Head | — | Indiana |
| 2 | Alberta Pittman | 5 | Daughter | — | Indiana |
| 3 | Richard B. Van Loon | 38 | Head | Contractor | Indiana |
| 4 | Volilla Van Loon | 29 | Wife | — | New York |
| 5 | Donald Bilbo | 53 | Head | Telegraph Operator | Indiana |
| 6 | Josephine Bilbo | 47 | Wife | Telegraph Operator | Indiana |
| 7 | Morris Jencks | 50 | Head | Engineer | Illinois |
| 8 | Minnie Jencks | 49 | Wife | — | Missouri |
| 9 | Aretha Jencks | 18 | Daughter | House Work | Missouri |
| 10 | Charles Howard Riley | 19 | Head | — | Pennsylvania |
| 11 | Lester Applegate | 26 | Head | Section Hand | Indiana |
| 12 | Donnabell Applegate | 24 | Wife | — | Indiana |
| 13 | Lyndon Applegate | 4 | Son | — | Indiana |
| 14 | Linda Applegate | 0 | Daughter | — | Indiana |
| 15 | Charles F. Becker | 36 | Head | Section Hand | Indiana |
| 16 | Caroline Becker | 32 | Wife | — | Indiana |
| 17 | Herbert Becker | 12 | Son | — | Indiana |
| 18 | Fern Becker | 9 | Daughter | — | Indiana |
| 19 | Caroline Becker | 8 | Daughter | — | Indiana |
| 20 | Ardele Becker | 3 | Daughter | — | Indiana |
| 21 | Herman Wagner | 53 | Head | Section Foreman | Indiana |
| 22 | Jennie Wagner | 40 | Wife | — | Indiana |
| 23 | Raymond Mosher | 19 | Step-son | Section Hand | Indiana |
| 24 | Winifred Mosher | 14 | Daughter | — | Indiana |
| 25 | Dale Mosher | 30 | Head | Section Hand | Indiana |
| 26 | Leona Mosher | 31 | Wife | — | Indiana |
| 27 | Alan Prosser | 56 | Head | — | Canada |
| 28 | Eselma Prosser | 54 | Wife | — | Illinois |
| 29 | Lois Prosser | 11 | Daughter | — | Illinois |
| 30 | John Fitzgerald | 61 | Head | — | Indiana |
| 31 | Bridget Fitzgerald | 56 | Wife | — | Ireland |
| 32 | John Jr. Fitzgerald THIS PERSON | 31 | Son | Farmer | Indiana |
| 33 | Mary Fitzgerald | 28 | Daughter | — | Indiana |
| 34 | Winifred Fitzgerald | 26 | Daughter | — | Indiana |
| 35 | Thomas Fitzgerald | 22 | Son | — | Indiana |
| 36 | Ella Mae Fitzgerald | 19 | Daughter | — | Indiana |
| 37 | Joseph Fitzgerald | 15 | Son | — | Indiana |
| 38 | Maurice Fitzgerald | 30 | Head | Operator | Indiana |
| 39 | Doris Fitzgerald | 29 | Wife | — | Kansas |
| 40 | Albert Miller | 60 | Hired man | Hired Hand | Indiana |
Related Census Records
Pedigree Summary
John + 5 siblings
Gen 1 · 7 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)