MC
Mary Copeland — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clay-County, Kansas
Our Model Tree links this Mary Copeland across the 1930 and 1940 US Censuses in Clay-County, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 20-person household.
Age 20
b. ~1920
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clay-County, Kansas |
| Surname | Copeland |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Clay Center Twp. |
| 1935 Residence (County) | Clay |
| Additional Details | |
| Occupation | Teacher |
| Industry | Grade School |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 440 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Teacher |
| Township / Ward | Clay Center Twp |
| Est. Birth Year | ~1920 |
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.
20 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mandy Heitsman | Other | — | 80 | ~1860 |
| William Robinson | Other | — | 73 | ~1867 |
| Florence Gepner | Other | — | 76 | ~1864 |
| Effie Copeland | Spouse | — | 47 | ~1893 |
| Robert Copeland | Son | — | 5 | ~1935 |
| Clay Here Begins | Other | — | — | |
| Alice Buckle | Other | — | 75 | ~1865 |
| Delber Copeland | Son | — | 12 | ~1928 |
| Donald Copeland | Son | — | 16 | ~1924 |
| Carrie Crom | Other | — | 55 | ~1885 |
| Beattie Copeland | Head | — | 51 | ~1889 |
| Joseph Copeland | Son | — | 18 | ~1922 |
| Burton Simpkins | Other | — | 59 | ~1881 |
| John Wasser | Other | — | 78 | ~1862 |
| Albert Hanson | Other | — | 63 | ~1877 |
| Viola Copeland | Daughter | — | 23 | ~1917 |
| Frank Eggenhammer | Other | — | 79 | ~1861 |
| Mary Copeland | Daughter | — | 20 | ~1920 |
| Fannie Tredwell | Other | — | 79 | ~1861 |
| Lourie Settles | Other | — | 85 | ~1855 |
Census Appearances
1930
Clay, Kansas
Daughter, age 9
Clay, Kansas · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Copeland |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Clay-County, Kansas
Daughter, age 20
Clay-County, Kansas · implied b. ~1920 — 20 household members
| Surname | Copeland |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Clay Center Twp. |
| 1935 Residence (County) | Clay |
| Occupation | Teacher |
| Industry | Grade School |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 440 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Copeland across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Copeland
Daughter · 1940 · age 20 · b. ~1920 · Kansas
★ You are viewing this record
Sibling
Joseph Copeland
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Viola Copeland
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Copeland
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delber Copeland
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Copeland
Sibling · 1940 · age 16
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 — Clay-County, Kansas
Open full size
1940 US Federal Census — Clay-County, Kansas
Page Contents
29 people indexed on this census page (nara:1940:m-t0627-01224-00563)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alice B Hammerli | 52 | Wife | — | Kansas |
| 2 | Donald R Hammerli | 17 | Son | — | Kansas |
| 3 | Richard T Hammerli | 11 | Son | — | Kansas |
| 4 | Lloyd Ahlberg | 27 | Head | Labour | Kansas |
| 5 | Zelda Ahlberg | 22 | Wife | — | Kansas |
| 6 | Jana Lou Ahlberg | 2 | Daughter | — | Kansas |
| 7 | Verda Mae Ahlberg | 0 | Daughter | — | Kansas |
| 8 | Albert Rundle | 69 | Head | Farmer | Kansas |
| 9 | Mary Rundle | 69 | Wife | — | England |
| 10 | Beattie Copeland | 51 | Head | Farmer | Kansas |
| 11 | Effie Copeland | 47 | Wife | — | Missouri |
| 12 | Viola Copeland | 23 | Daughter | Teacher | Kansas |
| 13 | Mary Copeland THIS PERSON | 20 | Daughter | Teacher | Kansas |
| 14 | Joseph Copeland | 18 | Son | Farmer | Kansas |
| 15 | Donald Copeland | 16 | Son | — | Kansas |
| 16 | Delber Copeland | 12 | Son | — | Kansas |
| 17 | Robert Copeland | 5 | Son | — | Kansas |
| 18 | Clay County Here Begins | None | County Farm | — | — |
| 19 | Mandy Heitsman | 80 | — | — | Indiana |
| 20 | Alice Buckle | 75 | — | — | Kansas |
| 21 | Carrie Crom | 55 | — | — | Kansas |
| 22 | Lourie Settles | 85 | — | — | Illinois |
| 23 | Florence Gepner | 76 | — | — | Arkansas |
| 24 | Fannie Tredwell | 79 | — | — | West Virginia |
| 25 | William Robinson | 73 | — | — | Pennsylvania |
| 26 | Frank Eggenhammer | 79 | — | — | Czechoslovakia |
| 27 | John Wasser | 78 | — | — | Ohio |
| 28 | Burton Simpkins | 59 | — | — | Kansas |
| 29 | Albert Hanson | 63 | — | — | Illinois |
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)