MC
Margaret Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Tippecanoe-County, Indiana
Our Model Tree links this Margaret Cox across the 1920, 1930 and 1940 US Censuses in Tippecanoe-County, Indiana (XGBoost, ~Confirmed), with identified parents Chester & Ernest — first a daughter (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Tippecanoe-County, Indiana |
| Surname | Cox |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | LAFAYETTE |
| 1935 Residence (County) | TIPPECANOE |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Lafayette |
| Est. Birth Year | ~1918 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Cox | Daughter | — | 22 | ~1918 |
| Ernest Cox | Head | — | 49 | ~1891 |
| Pauline Cox | Daughter | — | 19 | ~1921 |
| Ruth Cox | Spouse | — | 58 | ~1882 |
| Frances Cox | Daughter | — | 16 | ~1924 |
Census Appearances
1920
Tippecanoe, Indiana
Daughter, age 1
Tippecanoe, Indiana · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Tippecanoe, Indiana
Daughter, age 12
Tippecanoe, Indiana · implied b. ~1918 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Margaret E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Tippecanoe-County, Indiana
Daughter, age 22
Tippecanoe-County, Indiana · implied b. ~1918 — 5 household members
| Surname | Cox |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | LAFAYETTE |
| 1935 Residence (County) | TIPPECANOE |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Margaret Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Chester Cox (~0.92 confidence) and father Ernest Cox (~0.92 confidence) and father Robert Cox (~0.92 confidence) and mother Mary Mahlke (~0.92 confidence) and mother Mary Cox (~0.92 confidence) and mother Ruth Cox (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chester Cox
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Ernest Cox
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Robert Cox
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Mary Mahlke
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Mary Cox
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Ruth Cox
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Cox
Daughter · 1940 · age 22 · b. ~1918 · Indiana
★ You are viewing this record
Sibling
Frances Cox
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Cox
Sibling · 1940 · age 19
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 — Tippecanoe-County, Indiana
Open full size
1940 US Federal Census — Tippecanoe-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01098-00366)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elaine Peters | 13 | Daughter | — | Indiana |
| 42 | Glenn Peters | 9 | Son | — | Indiana |
| 43 | J. Arthur Lee | 65 | Head | Bookkeeper | Indiana |
| 44 | Daisy Lee | 62 | Wife | — | Indiana |
| 45 | Henry C. Ford | 52 | Head | Conductor | Indiana |
| 46 | Florence G. Ford | 47 | Wife | — | Colorado |
| 47 | Cynthia Smock | 76 | Head | — | Indiana |
| 48 | Nell A. Smock | 49 | Daughter | Stenographer | Indiana |
| 49 | Harley O. Marquis | 60 | Head | Engineer | Ohio |
| 50 | Nellie N. Marquis | 58 | Wife | — | Ohio |
| 51 | Barbara Saunders | 20 | Lodger | Waitress | Indiana |
| 52 | Robert F. Nieworth | 45 | Head | Agent | Indiana |
| 53 | Mae Nieworth | 46 | Wife | — | Indiana |
| 54 | Robert F. Nieworth | 18 | Son | — | Indiana |
| 55 | Marjorie Nieworth | 12 | Daughter | — | Indiana |
| 56 | George E. Fox | 25 | Head | Florist | Indiana |
| 57 | Frances May Fox | 23 | Wife | — | West Virginia |
| 58 | Samuel Whisnant | 74 | Head | — | Indiana |
| 59 | Bertha Whisnant | 72 | Wife | — | Indiana |
| 60 | Edward Kassever | 23 | Head | Owner | Indiana |
| 61 | Mary Kassever | 23 | Wife | Waitress | Indiana |
| 62 | Archibald B. Allen | 55 | Head | Machinist | Indiana |
| 63 | Minnie G. Allen | 54 | Wife | Clerk | Indiana |
| 64 | W. Otis Hammon | 35 | Head | Carpenter | Indiana |
| 65 | Estelle Hammon | 31 | Wife | Supervisor | Indiana |
| 66 | Eva Thomas | 57 | Mother-in-law | — | Ohio |
| 67 | Ernest Cox | 49 | Head | Fireman | Indiana |
| 68 | Ruth Cox | 58 | Wife | — | Illinois |
| 69 | Margaret Cox THIS PERSON | 22 | Daughter | — | Indiana |
| 70 | Pauline Cox | 19 | Daughter | — | Indiana |
| 71 | Frances Cox | 16 | Daughter | Housekeeper | Indiana |
| 72 | William M. Hages | 62 | Head | Erecting Foreman | Indiana |
| 73 | Elizabeth Hages | 63 | Wife | — | Indiana |
| 74 | Martha E. Hages | 37 | Daughter | Stenographer | Indiana |
| 75 | Huber S. Davis | 44 | Head | Carpenter | Indiana |
| 76 | Helen Davis | 49 | Wife | — | Illinois |
| 77 | Stanley Davis | 17 | Son | — | Indiana |
| 78 | Treva Davis | 16 | Daughter | — | Indiana |
| 79 | Edward E. Rover | 21 | Head | Driller | Indiana |
| 80 | Marjorie Rover | 18 | Wife | — | Indiana |
Pedigree Summary
Margaret + 2 siblings
Gen 1 · 6 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)