WC
William Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marquette-County, Michigan
Our Model Tree links this William Cox across the 1920, 1930 and 1940 US Censuses in Marquette-County, Michigan (XGBoost, ~Confirmed), with identified parents A & John — first a son (b.~1903), then head of a 3-person household.
Age 37
b. ~1903
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marquette-County, Michigan |
| Surname | Cox |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (County) | Marquette |
| Additional Details | |
| Occupation | Cutter |
| Industry | General Factory |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Cutter |
| Township / Ward | Ishpeming |
| Est. Birth Year | ~1903 |
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 |
|---|---|---|---|---|
| John Cox | Head | — | 66 | ~1874 |
| William Cox | Son | — | 37 | ~1903 |
| Annie Cox | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Marquette, Michigan
Son, age 17
Marquette, Michigan · implied b. ~1903 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Marquette, Michigan
Son, age 29
Marquette, Michigan · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | England |
| Occupation | Cutter |
| Industry | Corset factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Marquette-County, Michigan
Son, age 37
Marquette-County, Michigan · implied b. ~1903 — 3 household members
| Surname | Cox |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (County) | Marquette |
| Occupation | Cutter |
| Industry | General Factory |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father A Cox (~0.92 confidence) and father John Cox (~0.92 confidence) and father John Cox (~0.92 confidence) and mother Annie Cox (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
A Cox
b. ~1872
Source father
● Household
· direct · ~0.92
Father
John Cox
b. ~1873
Source father
● Household
· direct · ~0.92
Father
John Cox
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Annie Cox
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cox
Son · 1940 · age 37 · b. ~1903 · Michigan
★ 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 — Marquette-County, Michigan
Open full size
1940 US Federal Census — Marquette-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01786-00270)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joan Powell | 2 | Daughter | — | Michigan |
| 42 | Douglas S. Powell | 1 | Son | — | Michigan |
| 43 | Paul Salo | 23 | Head | Janitor | Michigan |
| 44 | Bernice Salo | 24 | Wife | Clerk | Michigan |
| 45 | John Cox | 66 | Head | Stationary | Michigan |
| 46 | Annie Cox | 60 | Wife | — | England |
| 47 | William Cox THIS PERSON | 37 | Son | Cutter | Michigan |
| 48 | Arthur Cox | 31 | Head | Salesman | Michigan |
| 49 | Bertha Cox | 33 | Wife | — | Michigan |
| 50 | Judith Ann Cox | 2 | Daughter | — | Michigan |
| 51 | William Dalton | 53 | Head | Switchman | Michigan |
| 52 | Bertha Dalton | 59 | Wife | — | Germany |
| 53 | Agnes Dalton | 28 | Daughter | Secretary | Michigan |
| 54 | Charles Rupp | 55 | Lodger | — | Germany |
| 55 | Erwin Joakin | 56 | Head | Lineman | Michigan |
| 56 | Mabel Joakin | 51 | Wife | — | Michigan |
| 57 | Marion Joakin | 23 | Daughter | Maid | Michigan |
| 58 | William Joakin | 18 | Son | — | Michigan |
| 59 | James Joakin | 11 | Son | — | Michigan |
| 60 | Erick Syderman | 65 | Head | — | Sweden |
| 61 | Charles Syderman | 64 | Brother | — | Sweden |
| 62 | Alma Syderman | 53 | Sister | — | Michigan |
| 63 | Roy La Freniere | 34 | Head | Trimmer | Michigan |
| 64 | Ida La Freniere | 28 | Wife | Instructor | Michigan |
| 65 | Joyce La Freniere | 9 | Daughter | — | Michigan |
| 66 | Dwight La Freniere | 2 | Son | — | Michigan |
| 67 | Richard Champion | 41 | Head | Miner | Michigan |
| 68 | Mary Champion | 31 | Wife | Seamer | England |
| 69 | Rosemary Champion | 15 | Daughter | — | Michigan |
| 70 | Arne Paola | 31 | Head | Miner | Michigan |
| 71 | Alma Paola | 31 | Wife | — | Michigan |
| 72 | Velma Paola | 7 | Daughter | — | Michigan |
| 73 | Ruth Carol Paola | 2 | Daughter | — | Michigan |
| 74 | Isaac Isaacson | 27 | Head | Laborer | Michigan |
| 75 | Aili Isaacson | 28 | Wife | — | Michigan |
| 76 | Ronald Isaacson | 2 | Son | — | Michigan |
| 77 | Sister Saimi | None | F | 0 | — |
| 78 | Albert Hansen | 61 | Head | Farmer | Michigan |
| 79 | William A. Hansen | 61 | Brother | Farmer | Michigan |
| 80 | Henry Hansen | 58 | Brother | Farmer | Michigan |
Related Census Records
Pedigree Summary
William
Gen 1 · 4 parents
~0.92
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)