MC
Mary Cowan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Custer-County, Colorado
Our Model Tree links this Mary Cowan across the 1930 and 1940 US Censuses in Custer-County, Colorado (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 8-person household.
Age 19
b. ~1921
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Custer-County, Colorado |
| Surname | Cowan |
| Given Name | Mary Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Silver Cliff Town |
| 1935 Residence (County) | Custer |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Commodity office |
| Class of Worker | GW |
| Hours Worked | 28 |
| Income (1939) | 90 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Stenographer |
| Township / Ward | Silver Cliff Town |
| Est. Birth Year | ~1921 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edna Cowan | Daughter | — | 5 | ~1935 |
| Fern Cowan | Daughter | — | 13 | ~1927 |
| Charles Cowan | Son | — | 11 | ~1929 |
| Ruth Cowan | Daughter | — | 17 | ~1923 |
| Velma Cowan | Spouse | — | 38 | ~1902 |
| Mary Cowan | Daughter | — | 19 | ~1921 |
| Johnny Cowan | Son | — | 3 | ~1937 |
| Pete Cowan | Head | — | 43 | ~1897 |
Census Appearances
1930
Custer, Colorado
Daughter, age 9
Custer, Colorado · implied b. ~1921 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cowan |
| Given Name | Mary M. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Occupation | none |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Custer-County, Colorado
Daughter, age 19
Custer-County, Colorado · implied b. ~1921 — 8 household members
| Surname | Cowan |
| Given Name | Mary Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Silver Cliff Town |
| 1935 Residence (County) | Custer |
| Occupation | Stenographer |
| Industry | Commodity office |
| Class of Worker | GW |
| Hours Worked | 28 |
| Income (1939) | 90 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Mary Cowan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cowan
Daughter · 1940 · age 19 · b. ~1921 · Colorado
★ You are viewing this record
Sibling
Edna Cowan
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Johnny Cowan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Cowan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fern Cowan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Cowan
Sibling · 1940 · age 17
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 — Custer-County, Colorado
Open full size
1940 US Federal Census — Custer-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00459-00448)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Herman Schwarz | 25 | Son | Laborer | Colorado |
| 42 | Rosie Schwarz | 20 | Daughter | Nurse | Colorado |
| 43 | Emma Schwarz | 14 | Daughter | — | Colorado |
| 44 | Vera Schwarz | 12 | Daughter | — | Colorado |
| 45 | Louis L. Schwarz | 29 | Head | Laborer | Colorado |
| 46 | Elsie Schwarz | 22 | Wife | — | Colorado |
| 47 | Pete Cowan | 43 | Head | Blade Man | Colorado |
| 48 | Velma Cowan | 38 | Wife | — | Colorado |
| 49 | Mary Margaret Cowan THIS PERSON | 19 | Daughter | Stenographer | Colorado |
| 50 | Ruth Cowan | 17 | Daughter | House Worker | Colorado |
| 51 | Fern E. Cowan | 13 | Daughter | — | Colorado |
| 52 | Charles W. Cowan | 11 | Son | — | Colorado |
| 53 | Edna May Cowan | 5 | Daughter | — | Colorado |
| 54 | Johnny Lee Cowan | 3 | Son | — | Colorado |
| 55 | John C. Pruett | 30 | Head | Laborer | New Mexico |
| 56 | Cleone Pruett | 22 | Wife | — | Colorado |
| 57 | Sarah Pruett | 4 | Son | — | Texas |
| 58 | Deanna Pruett | 2 | Daughter | — | No |
| 59 | Joseph K. Eichhorn | 78 | Head | — | Germany |
| 60 | Bertha Figge | 62 | Housekeeper | House Keeper | Germany |
| 61 | Erich A. Jeske | 56 | Head | Laborer | Colorado |
| 62 | Martha A. Jeske | 52 | Wife | Housekeeper | Germany |
| 63 | Herbert Jeske | 25 | Son | Truck Driver | Colorado |
| 64 | Max H. Jeske | 19 | Son | Filling Sta. Attend. | Colorado |
| 65 | Ines E. Jeske | 16 | Daughter | — | Colorado |
| 66 | Harold W. Jeske | 14 | Son | — | Colorado |
| 67 | Pearl A. Barnhill | 61 | Head | School Teacher | Kansas |
| 68 | Irven N. Dirrim | 57 | Brother | Miner | Colorado |
| 69 | Hundy Dirrim | 52 | Brother | Miner | Colorado |
| 70 | Anna Short | 54 | Head | School Teacher | Colorado |
| 71 | James R. Beaman | 72 | Head | Operator | New York |
| 72 | Lou C. Beaman | 70 | Wife | — | Iowa |
| 73 | Betty M. Beaman | 34 | Daughter | Clerk | Iowa |
| 74 | Charles E. Mcnulty | 72 | Head | Conductor Retired | Pennsylvania |
| 75 | Marion Walden | 28 | Head | Minister | Kansas |
| 76 | Catherine Walden | 26 | Wife | — | Colorado |
| 77 | Laura Walden | 5 | Daughter | — | Colorado |
| 78 | Kenneth Walden | 2 | Son | — | Colorado |
| 79 | Henry P. Tew | 69 | Head | — | Texas |
| 80 | Sarah M. Tew | 61 | Wife | — | Kansas |
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)