WC
William Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this William Cox across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents John & Minnie — first a head (b.~1902), then head of a 3-person household.
Age 38
b. ~1902
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Cox |
| Given Name | William F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Machinist |
| Industry | Pack. Seal. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 326 |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Machinist |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1902 |
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 |
|---|---|---|---|---|
| Dorothy Cox | Daughter | — | 10 | ~1930 |
| William Cox | Head | — | 38 | ~1902 |
| Alice Cox | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Baltimore, Maryland
Son, age 17
Baltimore, Maryland · implied b. ~1903 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | William E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Operator |
| Industry | Hat Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Other, age 27
Baltimore, Maryland · implied b. ~1903 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | William F. |
| Relationship to Head | O |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 26 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Grinder |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 2950 |
| Home Value / Rent | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 38
Baltimore-City-County, Maryland · implied b. ~1902 — 3 household members
| Surname | Cox |
| Given Name | William F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore |
| Occupation | Machinist |
| Industry | Pack. Seal. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 326 |
| Highest Grade | H 8 |
| 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 Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Cox (~0.92 confidence) and mother Minnie Cox (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Cox
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Minnie Cox
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cox
Head · 1940 · age 38 · b. ~1902 · Maryland
★ 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 — 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-t0627-01539-00356)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Peffer | 22 | Son | Asst Supt | Maryland |
| 42 | Milton P (Jr) Peffer | 17 | Son | — | Maryland |
| 43 | Ray N Messner | 24 | Head | Tool Inspector | Kansas |
| 44 | Gladys M Messner | 24 | Wife | — | Penna |
| 45 | George K Armiger | 47 | Head | Foreman | Maryland |
| 46 | Elsie G Armiger | 46 | Wife | — | Maryland |
| 47 | J Louis Armiger | 25 | Son | Clerk | Maryland |
| 48 | David J Brody | 3 | Grandson | — | Maryland |
| 49 | Albert C Boone | 21 | Head | Driver | Maryland |
| 50 | Helen F Boone | 27 | Wife | — | Maryland |
| 51 | Patricia Boone | 7 | Daughter | — | Maryland |
| 52 | Richard Boone | 4 | Son | — | Maryland |
| 53 | Albert E Boone | 54 | Father | Driver | Maryland |
| 54 | Barbara Boone | 53 | Mother | — | Maryland |
| 55 | Garland L Martin | 26 | Head | Salesman | Virginia |
| 56 | Gladys E Martin | 26 | Wife | — | Maryland |
| 57 | Doris E Martin | 5 | Daughter | — | Maryland |
| 58 | Delmar C Martin | 4 | Daughter | — | Maryland |
| 59 | Nadine L Martin | 3 | Daughter | — | Maryland |
| 60 | Clarence E Eckhardt | 27 | Head | Engr Standard | Maryland |
| 61 | Eva E Eckhardt | 27 | Wife | — | Maryland |
| 62 | Shirley M Eckhardt | 5 | Daughter | — | Maryland |
| 63 | Edward B Colson | 34 | Head | Salesman | Maryland |
| 64 | Gladys V Colson | 31 | Wife | — | Maryland |
| 65 | Richard L Colson | 5 | Son | — | Maryland |
| 66 | William F Cox THIS PERSON | 38 | Head | Machinist | Maryland |
| 67 | Alice C Cox | 46 | Wife | — | Maryland |
| 68 | Dorothy E Cox | 10 | Daughter | — | Maryland |
| 69 | Philip Capoce | 37 | Head | Salesman | Italy |
| 70 | Catherine Capoce | 34 | Wife | Teacher | Penna |
| 71 | Laura E Tidwell | 69 | Mother-in-law | — | Maryland |
| 72 | Frederick Klingelhofer | 37 | Head | Machinist | Maryland |
| 73 | Ruth Klingelhofer | 37 | Wife | — | Maryland |
| 74 | Frederick Klingelhofer | 10 | Son | — | Maryland |
| 75 | Milton Klingelhofer | 10 | Son | — | Maryland |
| 76 | Mary E Donaldson | 57 | Head | — | Delaware |
| 77 | George R Jr Donaldson | 28 | Son | Atty At Law | Delaware |
| 78 | George A Mcintosh | 50 | Head | Guard | Maryland |
| 79 | Mary E Mcintosh | 56 | Wife | — | Maryland |
| 80 | Evelyn V Mcintosh | 18 | Daughter | — | Maryland |
Pedigree Summary
William
Gen 1 · 2 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)