JF
John Fritz — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Carroll-County, Maryland
Our Model Tree links this John Fritz across the 1930 and 1940 US Censuses in Carroll-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 6-person household.
Age 58
b. ~1882
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Carroll-County, Maryland |
| Surname | Fritz |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Occupation | laborer |
| Industry | saw mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 200 |
| Highest Grade | No 5 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Mt Airy |
| Est. Birth Year | ~1882 |
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 |
|---|---|---|---|---|
| Amos Fritz | Son | — | 31 | ~1909 |
| John Fritz | Son | — | 11 | ~1929 |
| Charles Fritz | Son | — | 9 | ~1931 |
| Harry Fritz | Son | — | 7 | ~1933 |
| John Fritz | Head | — | 58 | ~1882 |
| Goldie Fritz | Spouse | — | 53 | ~1887 |
Census Appearances
1930
Baltimore, Maryland
Head, age 48
Baltimore, Maryland · implied b. ~1882 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fritz |
| Given Name | John C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maryland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 26 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Laborer |
| Industry | Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Home Value / Rent | 20 |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Carroll-County, Maryland
Head, age 58
Carroll-County, Maryland · implied b. ~1882 — 6 household members
| Surname | Fritz |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Frederick |
| Occupation | laborer |
| Industry | saw mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 200 |
| Highest Grade | No 5 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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.
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This person
Anchor record
John Fritz
Head · 1940 · age 58 · b. ~1882 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Carroll-County, Maryland
Open full size
1940 US Federal Census — Carroll-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01544-01025)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James B Lettieri | 79 | head | — | Italy |
| 42 | Ann Lettieri | 25 | daughter | — | Maryland |
| 43 | Shirley Lettieri | 1 | granddaughter | — | Maryland |
| 44 | John Fritz THIS PERSON | 58 | head | Laborer | Maryland |
| 45 | Goldie Fritz | 53 | wife | — | Maryland |
| 46 | Amos Fritz | 31 | son | Laborer | Maryland |
| 47 | John Jr Fritz | 11 | son | — | Maryland |
| 48 | Charles Fritz | 9 | son | — | Maryland |
| 49 | Harry Fritz | 7 | son | — | Maryland |
| 50 | John Lettieri | 42 | head | Laborer | Maryland |
| 51 | Genevieve Lettieri | 36 | wife | — | Maryland |
| 52 | Harry M Wetzel | 64 | father-in-law | Laborer | Maryland |
| 53 | Grant E Snyder | 74 | head | Farmer | Maryland |
| 54 | Annie Snyder | 55 | wife | — | Maryland |
| 55 | Herman Noel | 15 | lodger | Farm Laborer | Maryland |
| 56 | William T Duvall | 35 | head | Laborer | Maryland |
| 57 | Elsie A Duvall | 25 | wife | — | Maryland |
| 58 | Earl Duvall | 9 | son | — | Maryland |
| 59 | Ida B Snyder | 74 | head | — | Maryland |
| 60 | Clifford Snyder | 42 | son | Herdsman | Maryland |
| 61 | Maurice Snyder | 34 | son | Decorator | Maryland |
| 62 | Bondest B Snyder | 68 | head | Farmer | Maryland |
| 63 | Minnie Snyder | 50 | wife | — | Maryland |
| 64 | Noah Ellis | 40 | head | Truck Driver | Virginia |
| 65 | Lilly B Ellis | 32 | wife | — | Virginia |
| 66 | Ruth Ellis | 15 | daughter | — | Virginia |
| 67 | Roy Ellis | 13 | son | — | Virginia |
| 68 | Ruby Ellis | 10 | daughter | — | Virginia |
| 69 | Roberta Ellis | 8 | daughter | — | Maryland |
| 70 | Rosa Lee Ellis | 5 | daughter | — | Maryland |
| 71 | Rebecca Ellis | 2 | daughter | — | Maryland |
| 72 | Ralph Ellis | 0 | son | — | Maryland |
| 73 | Howard E Snyder | 44 | head | — | Maryland |
| 74 | Ida Snyder | 44 | wife | — | Maryland |
| 75 | Catherine Snyder | 15 | daughter | — | Maryland |
| 76 | James Snyder | 13 | son | — | Maryland |
| 77 | Irene Snyder | 4 | daughter | — | Maryland |
| 78 | Evelyn Snyder | 0 | daughter | — | Maryland |
| 79 | Albert Hymiller | 26 | cousin-in-law | Carpenter | Maryland |
| 80 | Mildred Hymiller | 24 | daughter | — | Maryland |
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)