JF
John Fritz — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lehigh-County, Pennsylvania
Our Model Tree links this John Fritz across the 1930 and 1940 US Censuses in Lehigh-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 5-person household.
Age 12
b. ~1928
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lehigh-County, Pennsylvania |
| Surname | Fritz |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Bethlehem City |
| 1935 Residence (County) | Lehigh |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Bethlehem City |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Eugene Fritz | Son | — | 10 | ~1930 |
| Helen Fritz | Daughter | — | 8 | ~1932 |
| Harold Fritz | Head | — | 39 | ~1901 |
| Ruth Fritz | Spouse | — | 39 | ~1901 |
| John Fritz | Son | — | 12 | ~1928 |
Census Appearances
1930
Northampton, Pennsylvania
Son, age 2
Northampton, Pennsylvania · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fretz |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New Jersey |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lehigh-County, Pennsylvania
Son, age 12
Lehigh-County, Pennsylvania · implied b. ~1928 — 5 household members
| Surname | Fritz |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Bethlehem City |
| 1935 Residence (County) | Lehigh |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 · Pennsylvania
★ You are viewing this record
Sibling
Helen Fritz
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Fritz
Sibling · 1940 · age 10
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 — Lehigh-County, Pennsylvania
Open full size
1940 US Federal Census — Lehigh-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03545-00623)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Laura M. Shelly | 70 | Mother | — | Pennsylvania |
| 42 | (Here Ends Block 77) Shelly | 77 | (here ends block 77) | (Here Ends Block 77) | (here ends block 77) |
| 43 | Claude B. Wismer | 30 | Head | Metallurgical Observer | Pennsylvania |
| 44 | Marie E. Wismer | 29 | Wife | Teacher | Pennsylvania |
| 45 | Neil J. Bass | 47 | Head | Trucker | Pennsylvania |
| 46 | Helen M. Bass | 45 | Wife | — | Pennsylvania |
| 47 | Marjorie H. Bass | 17 | Daughter | — | Pennsylvania |
| 48 | Derobert S. Bass | 15 | Daughter | — | Pennsylvania |
| 49 | Frank J. Wilkik | 45 | Head | Manager | Pennsylvania |
| 50 | Irene M. Wilkik | 50 | Wife | — | Maryland |
| 51 | Warren R. Wilkik | 19 | Son | Stock Man | Maryland |
| 52 | Patricia A. Wilkik | 10 | Daughter | — | Connecticut |
| 53 | Joseph Olah | 53 | Head | Machinist | Germany |
| 54 | Annie Olah | 57 | Wife | — | Hungary |
| 55 | Norman W. Engler | 20 | Head | Laborer | Pennsylvania |
| 56 | Catherine E. Engler | 22 | Wife | Seamstress | Pennsylvania |
| 57 | Peter Cross | 69 | Head | Laborer | New York |
| 58 | Mary A. Cross | 65 | Wife | — | Maryland |
| 59 | (Here Ends Block 78) | 78 | (here ends block 78) | (Here Ends Block 78) | (here ends block 78) |
| 60 | Ernest E. Zimmerman | 35 | Head | Plugman | Pennsylvania |
| 61 | Mable E. Zimmerman | 34 | Wife | — | Pennsylvania |
| 62 | Homer L. Stull | 19 | Son | — | Pennsylvania |
| 63 | Raymond K. Stull | 11 | Son | — | Pennsylvania |
| 64 | Edwin E. Zimmerman | 9 | Son | — | Pennsylvania |
| 65 | Helen M. Maurer | 44 | Head | — | Pennsylvania |
| 66 | Oscar S. Maurer | 19 | Son | Electrician | Pennsylvania |
| 67 | Dorothy H. Maurer | 16 | Daughter | — | Pennsylvania |
| 68 | Loretta M. Maurer | 14 | Daughter | — | Pennsylvania |
| 69 | Myrtle S. Maurer | 13 | Daughter | — | Pennsylvania |
| 70 | Harold R. Maurer | 11 | Son | — | Pennsylvania |
| 71 | Royden F. Maurer | 8 | Son | — | Pennsylvania |
| 72 | Randall B. Maurer | 6 | Son | — | Pennsylvania |
| 73 | (Here Ends Block 79) | 79 | (here ends block 79) | (Here Ends Block 79) | (here ends block 79) |
| 74 | Harold E. Fritz | 39 | Head | Laborer | Pennsylvania |
| 75 | Ruth E. Fritz | 39 | Wife | — | Pennsylvania |
| 76 | John E. Fritz THIS PERSON | 12 | Son | — | Pennsylvania |
| 77 | Eugene F. Fritz | 10 | Son | — | Pennsylvania |
| 78 | Helen A. Fritz | 8 | Daughter | — | Pennsylvania |
| 79 | James G. Quigg | 31 | Head | Fireman | Pennsylvania |
| 80 | Mildred M. Quigg | 25 | Wife | — | Pennsylvania |
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)