WM
William Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this William Mack across the 1920, 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 3-person household.
Age 69
b. ~1871
Male
Head
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis (City) |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Occupation | Automobile Repair |
| Industry | Repair Shop |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Automobile Repair |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1871 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Louisa Mack | Spouse | — | 69 | ~1871 |
| William Mack | Head | — | 69 | ~1871 |
| Frederick Mack | Son | — | 27 | ~1913 |
Census Appearances
1920
St Louis, …
Head, age 48
St Louis, Missouri · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | William T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Germany |
| Mother's Birthplace | Switzerland |
| Occupation | Butcher |
| Industry | Repair Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
St Louis, …
Head, age 58
St Louis, Missouri · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | William G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 38 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Switzerland |
| Occupation | Sheet Metal Worker |
| Industry | Automobile |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Value / Rent | No |
| Veteran | 30.00 |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Head, age 69
St.-Louis-City-County, Missouri · implied b. ~1871 — 3 household members
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis (City) |
| 1935 Residence (County) | St. Louis City |
| Occupation | Automobile Repair |
| Industry | Repair Shop |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Mack across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mack
Head · 1940 · age 69 · b. ~1871 · Missouri
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Louis-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02209-00649)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Wagemann | 70 | Brother | Clerk | Missouri |
| 42 | John Fuchs | 74 | Head | Laborer | Germany |
| 43 | Mary Fuchs | 77 | Wife | — | Germany |
| 44 | Nicholas Simon | 48 | Head | Proprietor | Missouri |
| 45 | Marie Simon | 37 | Wife | — | Missouri |
| 46 | Nicholas Simon | 13 | Son | — | Missouri |
| 47 | Raymond Simon | 11 | Son | — | Missouri |
| 48 | Thomas Simon | 9 | Son | — | Missouri |
| 49 | Donald Simon | 7 | Son | — | Missouri |
| 50 | Robert Simon | 6 | Son | — | Missouri |
| 51 | Joseph Simon | 4 | Son | — | Missouri |
| 53 | Otto H. Eschenbrenner | 61 | Head | Attendant | Missouri |
| 54 | Daniel Eschenbrenner | 31 | Son | Cashier | Missouri |
| 55 | Alvin Eschenbrenner | 27 | Son | Proprietor | Missouri |
| 56 | Daniel Eschenbrenner | 57 | Head | Proprietor | Missouri |
| 57 | Alma Eschenbrenner | 51 | Wife | — | Missouri |
| 58 | Daniel Jr. Eschenbrenner | 23 | Son | Shop Helper | Missouri |
| 59 | Marie Eschenbrenner | 15 | Daughter | — | Missouri |
| 60 | Emma Kassing | 56 | Head | — | Missouri |
| 61 | Robert Browner | 35 | Lodger | Type Maker | Missouri |
| 62 | Matthew Rimmman | 59 | Head | Cutter | Missouri |
| 63 | Bertha Rimmman | 59 | Wife | — | Missouri |
| 64 | William Rimmman | 36 | Son | Clerk-Office | Missouri |
| 65 | Pearl Rimmman | 30 | Daughter | Clerk-Office | Missouri |
| 66 | Emma Rimmman | 26 | Daughter | Clerk-Office | Missouri |
| 67 | Dolores Rimmman | 9 | Daughter | — | Missouri |
| 68 | William Mack THIS PERSON | 69 | Head | Automobile Repair | Missouri |
| 69 | Louisa Mack | 69 | Wife | — | Illinois |
| 70 | Frederick Mack | 27 | Son | Helper | Missouri |
| 71 | Elsie Crowley | 41 | Head | Personal Shopper | Iowa |
| 72 | Doris Crowley | 20 | Daughter | Chart Authorizer | Missouri |
| 73 | Charles Klebs | 23 | Head | Machine Operator | Missouri |
| 74 | Amelia Klebs | 25 | Wife | — | Missouri |
| 75 | Charles Jr. Klebs | 1 | Son | — | Missouri |
| 76 | William Mccabe | 52 | Head | Watchman | Missouri |
| 77 | Margaret Mccabe | 45 | Wife | — | Missouri |
| 78 | William Jr. Mccabe | 24 | Son | Assembling | Missouri |
| 79 | George Mccabe | 19 | Son | Repair Part Man | Missouri |
| 80 | Albert Pieper | 67 | Head | Partner | Missouri |
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)