WF
William Fischer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this William Fischer across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Fischer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Laborer |
| Industry | Brick Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | H 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1920 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Fischer | Son | — | 20 | ~1920 |
| Bernard Fischer | Son | — | 13 | ~1927 |
| Gerarda Fischer | Daughter | — | 18 | ~1922 |
| John Fischer | Son | — | 11 | ~1929 |
| John Fischer | Head | — | 50 | ~1890 |
| Mary Fischer | Spouse | — | 49 | ~1891 |
| Elizabeth Fischer | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Baltimore, Maryland
Son, age 10
Baltimore, Maryland · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 20
Baltimore-City-County, Maryland · implied b. ~1920 — 7 household members
| Surname | Fischer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore City |
| Occupation | Laborer |
| Industry | Brick Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | H 7 |
| 1935 Residence | Same place |
| 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 William Fischer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Fischer
Son · 1940 · age 20 · b. ~1920 · Maryland
★ You are viewing this record
Sibling
Bernard Fischer
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Fischer
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerarda Fischer
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Fischer
Sibling · 1940 · age 16
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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01538-00434)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Behr | 22 | Son | Draftsman | Maryland |
| 2 | Henry Behr | 20 | Son | Auto Inspector | Maryland |
| 3 | Fred Wick | 47 | Brother-in-law | Brick-Layer | Maryland |
| 4 | Isaac Merriken | 38 | Head | Chauffeur | Maryland |
| 5 | Lena Merriken | 42 | Wife | — | Maryland |
| 6 | Mary Merriken | 12 | Daughter | — | Maryland |
| 7 | Winifred Merriken | 11 | Daughter | — | Maryland |
| 8 | Edna Merriken | 4 | Daughter | — | Maryland |
| 9 | Woodrow O'Donnell | 23 | Head | Laborer | Maryland |
| 10 | Marie O'Donnell | 21 | Wife | — | Maryland |
| 11 | Frederick J. O'Donnell | 1 | Son | — | Maryland |
| 12 | Joseph Thablic | Thablie | 56 | Head | Crane Operator | Austria |
| 13 | Helen Thablic | Thablie | 49 | Wife | — | Austria |
| 14 | Frank Thablic | Thablie | 22 | Son | Crane Operator | Maryland |
| 15 | Agnes Thablic | Thablie | 20 | Daughter | Seamstress | Maryland |
| 16 | Helen Thablic | Thablie | 18 | Daughter | Bottle Cap Packer | Maryland |
| 17 | Cecelia Thablic | Thablie | 16 | Daughter | Laborer | Maryland |
| 18 | Joseph Thablic | Thablie | 15 | Son | — | Maryland |
| 19 | Edward Thablic | Thablie | 12 | Son | — | Maryland |
| 20 | Mildred Thablic | Thablie | 11 | Daughter | — | Maryland |
| 21 | Raymond Thablic | Thablie | 7 | Son | — | Maryland |
| 22 | Lawrence Knapp | 29 | Head | Cleaner Steel-Hot Strip | Maryland |
| 23 | Mary Knapp | 27 | Wife | — | Maryland |
| 24 | Mary Knapp | 9 | Daughter | — | Maryland |
| 25 | Nancy Lee Knapp | 7 | Daughter | — | Maryland |
| 26 | Margaret Knapp | 6 | Daughter | — | Maryland |
| 27 | Joseph Belzner | 29 | Head | Foreman | Maryland |
| 28 | Marie Belzner | 28 | Wife | — | Maryland |
| 29 | Donald Belzner | 7 | Son | — | Maryland |
| 30 | Alfred Belzner | 4 | Son | — | Maryland |
| 31 | John Fischer | 50 | Head | Night Watchman | Maryland |
| 32 | Mary A. Fischer | 49 | Wife | — | Maryland |
| 33 | William Fischer THIS PERSON | 20 | Son | Laborer | Maryland |
| 34 | Gerarda Fischer | 18 | Daughter | Dress Maker | Maryland |
| 35 | Elizabeth Fischer | 16 | Daughter | New Worker | Maryland |
| 36 | Bernard Fischer | 13 | Son | — | Maryland |
| 37 | John Fischer | 11 | Son | — | Maryland |
| 38 | William Lueders | 32 | Head | Site Setter Helper | Maryland |
| 39 | Erasma Lueders | 29 | Wife | Sort Straws | Maryland |
| 40 | Charles Kleinsmith | 39 | Head | Boiler Maker | Iowa |
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)