JF
John Fitzgerald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this John Fitzgerald across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents Edward & Sarah — first a head (b.~1893), then head of a 3-person household.
Age 47
b. ~1893
Male
Head
Born: Nebraska
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Fitzgerald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | City & County of Denver |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | Brakeman |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 2200 |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Occupation | Brakeman |
| Township / Ward | City County Of Denver |
| Est. Birth Year | ~1893 |
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 |
|---|---|---|---|---|
| Virginia Fitzgerald | Daughter | — | 11 | ~1929 |
| John Fitzgerald | Head | — | 47 | ~1893 |
| Kathryn Fitzgerald | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Denver, Colorado
Son, age 26
Denver, Colorado · implied b. ~1894 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Illinois |
| Mother's Birthplace | England |
| Occupation | Brakeman |
| Industry | Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1930
Denver, Colorado
Head, age 36
Denver, Colorado · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Nebraska |
| Age at First Marriage | 25 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | England |
| Occupation | Conductor |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Radio Set | R |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Denver-County, Colorado
Head, age 47
Denver-County, Colorado · implied b. ~1893 — 3 household members
| Surname | Fitzgerald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | City & County of Denver |
| 1935 Residence (County) | Denver |
| Occupation | Brakeman |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 2200 |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Fitzgerald (~0.92 confidence) and mother Sarah Fitzgerald (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Fitzgerald
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Sarah Fitzgerald
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Fitzgerald
Head · 1940 · age 47 · b. ~1893 · Colorado
★ 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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00493-00387)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Myrtle E. Albright | 58 | Wife | — | Ohio |
| 2 | John P. Little | 49 | Head | — | Illinois |
| 3 | Mary M. Little | 43 | Wife | — | Nova Scotia |
| 4 | Alfred D. Moreland | 50 | Head | Telegraph Installer | Iowa |
| 5 | Thelma T. Moreland | 43 | Wife | — | Colorado |
| 6 | Virginia F. Moreland | 14 | Daughter | — | Colorado |
| 7 | Timothy M. Lawrin | 30 | Head | Pharmacist | Colorado |
| 8 | Mary G. Lawrin | 32 | Wife | Beauty Operator | Colorado |
| 9 | Catherine Dowd | 65 | Mother | — | Ireland |
| 10 | Martin M. Dowd | 27 | Brother | Information Clerk | Colorado |
| 11 | Justina Riedel | 49 | Head | — | Austria |
| 12 | Walter Riedel | 28 | Son | — | Austria |
| 13 | Alfreda Riedel | 26 | Daughter | Advertising Assistant | Kansas |
| 14 | Michael J. Feely | 49 | Head | Assistant Supervisor | Colorado |
| 15 | Nellie G. Feely | 51 | Wife | — | Free State |
| 16 | James T. Feely | 24 | Son | Editorial Writer | Colorado |
| 17 | Mary C. Feely | 21 | Daughter | File Clerk | Colorado |
| 18 | Vincent J. Feely | 18 | Son | Office Boy | Colorado |
| 19 | Francis A. Freeland | 35 | Head | Civil Engineer | So. Dakota |
| 20 | Maude M. Freeland | 35 | Wife | — | So. Dakota |
| 21 | Donald A. Freeland | 4 | Son | — | So. Dakota |
| 22 | Frank B. England | 72 | Head | — | England |
| 23 | Shelby H. Rabb | 36 | Head-in-law | Clerk | Colorado |
| 24 | Mary Rabb | 36 | Daughter | — | Colorado |
| 25 | Agnes Y. Leadbetter | 74 | Head | — | Scotland |
| 26 | Dorothy A. Leadbetter | 37 | Daughter | Clerk | Colorado |
| 27 | Lillian F. Cummings | 31 | Lodger | Clerk | Illinois |
| 28 | Edward E. Goshen | 46 | Head | Sales Representative | Pennsylvania |
| 29 | Mary A. Goshen | 41 | Wife | Bookkeeper | Colorado |
| 30 | Patrick F. Bone | 74 | Father-in-law | — | Missouri |
| 31 | Joseph N. Skowronski | 47 | Head | Ham Boner | Poland |
| 32 | Pauline A. Skowronski | 40 | Wife | — | Colorado |
| 33 | Richard M. Shay | 34 | Son-in-law | Assistant Dept. Manager | Iowa |
| 34 | Magdalene J. Shay | 22 | Daughter | — | Colorado |
| 35 | Michael J. Shay | 1 | Grandson | — | Colorado |
| 36 | John Fitzgerald THIS PERSON | 47 | Head | Brakeman | Nebraska |
| 37 | Kathryn O. Fitzgerald | 45 | Wife | — | Arizona |
| 38 | Virginia L. Fitzgerald | 11 | Daughter | — | Colorado |
| 39 | Harry G. Peterson | 35 | Head | Drug Manager | Colorado |
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)