WF
William Fischer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this William Fischer across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Berthold & Minnie — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Fischer |
| Given Name | William O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Office Clerk |
| Industry | Dye House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 162 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Office Clerk |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1917 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Robert Fischer | Son | — | 21 | ~1919 |
| Minnie Fischer | Spouse | — | 49 | ~1891 |
| Otto Fischer | Head | — | 48 | ~1892 |
| Evelyn Fischer | Daughter | — | 12 | ~1928 |
| William Fischer | Son | — | 23 | ~1917 |
Census Appearances
1920
Essex, Massachusetts
Other, age 2
Essex, Massachusetts · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | William |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Son, age 13
Essex, Massachusetts · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 23
Essex-County, Massachusetts · implied b. ~1917 — 5 household members
| Surname | Fischer |
| Given Name | William O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Essex |
| Occupation | Office Clerk |
| Industry | Dye House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 162 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Berthold Fischer (~0.84 confidence) and mother Minnie Fischer (~0.92 confidence) and father Otto Fischer (~0.92 confidence). The pedigree spans 2 generations with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
Berthold Fischer
b. ~1854
Source father>father
● Household
· direct · ~0.84
Mother
Minnie Fischer
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Otto Fischer
b. ~1892
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Fischer
Son · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Evelyn Fischer
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Fischer
Sibling · 1940 · age 21
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01582-00555)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred A. Murray | 19 | Daughter | — | Massachusetts |
| 2 | Wesley H. Gough | 42 | Head | Second Hand | Massachusetts |
| 3 | Emma Gough | 46 | Wife | — | Massachusetts |
| 4 | Charles W. Court | 41 | Brother-in-law | Attendant | Massachusetts |
| 5 | Lorenzo Palmisano | 45 | Head | Carpenter | Italy |
| 6 | Alfreda Palmisano | 40 | Wife | — | Italy |
| 7 | Grace J. Palmisano | 14 | Daughter | — | Massachusetts |
| 8 | Frank S. Palmisano | 12 | Son | — | Massachusetts |
| 9 | Lorenzo J. Palmisano | 6 | Son | — | Massachusetts |
| 10 | William J. Heffernan | 50 | Head | Barber | Massachusetts |
| 11 | Celia V. Heffernan | 53 | Wife | — | Italy |
| 12 | William F. Heffernan | 30 | Son | Research Work | Massachusetts |
| 13 | Ruth C. Heffernan | 28 | Daughter | Piano Teacher | Massachusetts |
| 14 | Andrew E. Anderson | 43 | Head | Optician | Massachusetts |
| 15 | Anna D. Anderson | 44 | Wife | Mender | Massachusetts |
| 16 | Richard I. Anderson | 19 | Son | — | Massachusetts |
| 17 | Edward J. Klob | 32 | Head | Baker | Massachusetts |
| 18 | Mabel H. Klob | 28 | Wife | Bakery Clerk | New Hampshire |
| 19 | Otto R. Fischer | 48 | Head | Manager | Massachusetts |
| 20 | Minnie E. Fischer | 49 | Wife | — | Massachusetts |
| 21 | William O. Fischer THIS PERSON | 23 | Son | Office Clerk | Massachusetts |
| 22 | Robert A. Fischer | 21 | Son | Clerk | Massachusetts |
| 23 | Evelyn R. Fischer | 12 | Daughter | — | Massachusetts |
| 24 | Benjamin F. Towey | 57 | Head | Cost Clerk | Massachusetts |
| 25 | Helen A. Towey | 48 | Wife | Finish Mending | Massachusetts |
| 26 | Frank H. Towey | 17 | Son | — | Massachusetts |
| 27 | Marguerite L. Towey | 15 | Daughter | — | Massachusetts |
| 28 | Kenneth B. Kerri | 55 | Head | Shipper | Canada |
| 29 | Nellie Kerri | 53 | Wife | — | Massachusetts |
| 30 | Marian E. Kerri | 22 | Daughter | Stenographer | Massachusetts |
| 31 | Elinor D. Kerri | 17 | Daughter | — | Massachusetts |
| 32 | Florence Q. Mccarthy | 65 | Head | — | Irish Free State |
| 33 | Cornelius Mccarthy | 33 | Son | Taxi Driver | Massachusetts |
| 34 | Helen M. Mccarthy | 21 | Daughter | Saleslady | Massachusetts |
| 35 | Helen Mccarthy | 70 | Sister | — | Irish Free State |
| 36 | Florence R. Mccarthy | 38 | Head | Fireman | Massachusetts |
| 37 | Dorothy R. Mccarthy | 36 | Wife | Mending | Massachusetts |
| 38 | Bryan O'Connell | 78 | Head | — | Irish Free State |
| 39 | Mary A. O'Connell | 67 | Wife | — | Irish Free State |
| 40 | Agnes V. O'Connell | 32 | Daughter | Operator Clerk | Massachusetts |
Pedigree Summary
William + 2 siblings
Gen 1 · 2 parents
~0.92
Gen 2 · 1 grandparents
~0.84
Max depth 4 (1900–1950 window)
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)