JF
John Fritz — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kent-County, Michigan
Our Model Tree links this John Fritz across the 1930 and 1940 US Censuses in Kent-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kent-County, Michigan |
| Surname | Fritz |
| Given Name | John Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | East Grand Rapids |
| 1935 Residence (County) | Kent |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | East Grand Rapids |
| Est. Birth Year | ~1928 |
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 |
|---|---|---|---|---|
| Edward Fritz | Son | — | 14 | ~1926 |
| Donald Fritz | Son | — | 4 | ~1936 |
| John Fritz | Son | — | 12 | ~1928 |
| Clara Heyda | Other | — | 38 | ~1902 |
| Barbara Fritz | Daughter | — | 18 | ~1922 |
| Celia Fritz | Spouse | — | 49 | ~1891 |
| Edward Fritz | Head | — | 51 | ~1889 |
| Philip Fritz | Son | — | 24 | ~1916 |
Census Appearances
1930
Kent, Michigan
Son, age 2
Kent, Michigan · implied b. ~1928 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fritz |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Wisconsin |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Kent-County, Michigan
Son, age 12
Kent-County, Michigan · implied b. ~1928 — 8 household members
| Surname | Fritz |
| Given Name | John Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | East Grand Rapids |
| 1935 Residence (County) | Kent |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| 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 Fritz across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Fritz
Son · 1940 · age 12 · b. ~1928 · Michigan
★ You are viewing this record
Sibling
Edward Fritz
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Fritz
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Fritz
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Fritz
Sibling · 1940 · age 24
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 — Kent-County, Michigan
Open full size
1940 US Federal Census — Kent-County, Michigan
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01774-00713)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kent Dewey | 27 | Foster son | Interne | Michigan |
| 42 | Edward M. Fritz | 51 | Head | President | Michigan |
| 43 | Celia Marie Fritz | 49 | Wife | — | Wisconsin |
| 44 | Philip Gordon Fritz | 24 | Son | Bookkeeper | Michigan |
| 45 | Barbara Helen Fritz | 18 | Daughter | — | Michigan |
| 46 | Edward Gerard Fritz | 14 | Son | — | Michigan |
| 47 | John Joseph Fritz THIS PERSON | 12 | Son | — | Michigan |
| 48 | Donald Paul Fritz | 4 | Son | — | Michigan |
| 49 | Clara Heyda | 38 | Servant | Servant | Michigan |
| 50 | Irving Orr | 56 | Head | President | New York |
| 51 | Cora Orr | 47 | Wife | — | Michigan |
| 52 | Mary Jane Orr | 20 | Daughter | — | Illinois |
| 53 | Caroline Hulswit | 63 | Head | — | Michigan |
| 54 | Robert Hulswit | 34 | Son | Bookkeeper | Michigan |
| 55 | Carl G. Johnson | 74 | Head | Manufacturer | Sweden |
| 56 | Emogene V. Johnson | 64 | Wife | — | Michigan |
| 57 | Earl M. Johnson | 42 | Son | Executive Secretary | Michigan |
| 58 | V. Pauline Johnson | 26 | Daughter | Saleslady | Michigan |
| 59 | Stella Lindberg | 40 | Servant | Servant | Michigan |
| 60 | Clarence A. Rinhart | 50 | Head | Coal Dealer | Wisconsin |
| 61 | Elizabeth Rinhart | 50 | Wife | — | Michigan |
| 62 | Arthur Butler | 29 | Servant | Chauffeur & Butler | Florida |
| 63 | Margie Butler | 20 | Servant | Cook And Housemaid | Florida |
| 64 | Thomas C. Wantz | 50 | Head | Salesman | Michigan |
| 65 | Marguerite Wantz | 51 | Wife | — | Maryland |
| 66 | George P. Wantz | 25 | Son | Salesman | Michigan |
| 67 | Virginia P. Wantz | 22 | Daughter | Secretary | Michigan |
| 68 | Thomas Jr. Wantz | 14 | Son | — | Michigan |
| 69 | Marie Klein | 21 | Servant | Servant | Michigan |
| 70 | Charles J. O'Gorman | 49 | Head | Proprietor | Michigan |
| 71 | Agnes R. O'Gorman | 46 | Wife | — | Michigan |
| 72 | Arthur H. Riegel | 48 | Head | Jeweler | Michigan |
| 73 | Marianna C. Riegel | 33 | Wife | — | Kentucky |
| 74 | Cora Willenstein | 21 | Servant | Servant | Iowa |
| 75 | David E. Heiss | 45 | Head | Proprietor | Michigan |
| 76 | Esther L. Heiss | 32 | Wife | — | Illinois |
| 77 | Donna Heiss | 18 | Daughter | — | Michigan |
| 78 | Sol Swiss | 30 | Brother | Manager | Illinois |
| 79 | Aurelia Reine | 20 | Servant | Servant | 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)