JF
John Frederick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this John Frederick across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Frederick |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1925 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ilene Frederick | Daughter | — | 10 | ~1930 |
| Clara Frederick | Spouse | — | 41 | ~1899 |
| Arnold Frederick | Son | — | 13 | ~1927 |
| Celestine Frederick | Daughter | — | 20 | ~1920 |
| John Frederick | Head | — | 45 | ~1895 |
| John Frederick | Son | — | 15 | ~1925 |
Census Appearances
1930
Wayne, Michigan
Son, age 5
Wayne, Michigan · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frederick |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Poland |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Son, age 15
Wayne-County, Michigan · implied b. ~1925 — 6 household members
| Surname | Frederick |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Frederick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Frederick
Son · 1940 · age 15 · b. ~1925 · Michigan
★ You are viewing this record
Sibling
Ilene Frederick
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Celestine Frederick
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arnold Frederick
Sibling · 1940 · age 13
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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01875-00481)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nancy Ann Klosic | 2 | Daughter | — | Michigan |
| 2 | John G. Kontul | 40 | Lodger | Metal Finisher | Brazil |
| 3 | Anthony Stelamich | 39 | Lodger | Metal Finisher | Yugoslavia |
| 4 | Mary Glassy | 59 | Head | Cook | Michigan |
| 5 | Lloyd Armstrong | 40 | Son | Truck Driver | Michigan |
| 6 | Herbert Paige | 32 | Head | Follow Up Man | Michigan |
| 7 | Margaret Paige | 30 | Wife | Auditor | Michigan |
| 8 | John Frederick | 45 | Head | Plant Superintendent | Poland |
| 9 | Clara Frederick | 41 | Wife | — | Michigan |
| 10 | Celestine Frederick | 20 | Daughter | Secretary | Michigan |
| 11 | John Jr. Frederick THIS PERSON | 15 | Son | — | Michigan |
| 12 | Arnold Frederick | 13 | Son | — | Michigan |
| 13 | Ilene Frederick | 10 | Daughter | — | Michigan |
| 14 | Alfred Weigle | 42 | Head | Bricklayer | Canada-English |
| 15 | Irene Weigle | 33 | Wife | — | Canada-French |
| 16 | Alfreda Weigle | 14 | Daughter | — | Canada-French |
| 17 | Mary Lou Weigle | 13 | Daughter | — | Canada-French |
| 18 | Jacqueline Weigle | 11 | Daughter | — | Michigan |
| 19 | Carol Sue Weigle | 2 | Daughter | — | Michigan |
| 20 | Arvo Lekander | 39 | Head | Garage Foreman | Finland |
| 21 | Alma Lekander | 35 | Wife | — | Minnesota |
| 22 | Elaine Lekander | 16 | Daughter | — | Minnesota |
| 23 | James Lekander | 14 | Son | — | Minnesota |
| 24 | Jack Bryant | 10 | Nephew | — | Minnesota |
| 25 | Esther Bryant | 28 | In-law | Beauty Operator | Minnesota |
| 26 | John Andress | 57 | Head | Yard Attendant | Romania |
| 27 | Susan Andress | 53 | Wife | — | Romania |
| 28 | Marie Andress | 14 | Daughter | — | Michigan |
| 29 | Edward Treglown | 57 | Head | Janitor | England |
| 30 | Fannie Treglown | 53 | Wife | — | Michigan |
| 31 | Robert L. Treglown | 20 | Son | Messenger | Michigan |
| 32 | Walter Heater | 32 | Head | Truck Driver | Illinois |
| 33 | Cora Heater | 31 | Wife | — | Illinois |
| 34 | Walter Jr. Heater | 13 | Son | — | Michigan |
| 35 | Robert E. Heater | 6 | Son | — | Michigan |
| 36 | Michael Osentoski | 23 | Head | Sander | Michigan |
| 37 | Stella Osentoski | 24 | Wife | — | Pennsylvania |
| 38 | Michael Osentoski | 1 | Son | — | Michigan |
| 39 | Henry Kwasniewski | 30 | Head | Truck Driver | Michigan |
| 40 | Julia R. Kwasniewski | 24 | Wife | — | Michigan |
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)