MW
Mary William — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wyandotte-County, Kansas
Our Model Tree links this Mary William across the 1930 and 1940 US Censuses in Wyandotte-County, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 6-person household.
Age 13
b. ~1927
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wyandotte-County, Kansas |
| Surname | William |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Kansas City Township |
| 1935 Residence (County) | Wyandotte |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Kansas City Township |
| Est. Birth Year | ~1927 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary William | Spouse | — | 49 | ~1891 |
| Phillip William | Son | — | 11 | ~1929 |
| James William | Head | — | 51 | ~1889 |
| Andrew William | Son | — | 16 | ~1924 |
| Mary William | Daughter | — | 13 | ~1927 |
| Theresa William | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Wyandotte, Kansas
Daughter, age 3
Wyandotte, Kansas · implied b. ~1927 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Wyandotte-County, Kansas
Daughter, age 13
Wyandotte-County, Kansas · implied b. ~1927 — 6 household members
| Surname | William |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Kansas City Township |
| 1935 Residence (County) | Wyandotte |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| 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 William across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary William
Daughter · 1940 · age 13 · b. ~1927 · Kansas
★ You are viewing this record
Sibling
Phillip William
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa William
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew William
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 — Wyandotte-County, Kansas
Open full size
1940 US Federal Census — Wyandotte-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01267-00252)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Iloras M. Green | 6 | Daughter | — | Kansas |
| 2 | Cecil Smith | 30 | Head | Porter | Arkansas |
| 3 | Roberta Smith | 29 | Wife | — | Arkansas |
| 4 | Hester Smith | 12 | Daughter | — | Kansas |
| 5 | Audrey Wells | 48 | Head | Maid | Wyoming |
| 6 | Henrietta E. Wells | 30 | Daughter | Sales Girl | Kansas |
| 7 | Henry F. Wells | 24 | Son | Lather | Kansas |
| 8 | Willie Humphrey | 42 | Head | Porter | Texas |
| 9 | Palestine Humphrey | 22 | Wife | — | Arkansas |
| 10 | Clarence Glass | 18 | Son | Laborer | Oklahoma |
| 11 | William Humphrey | 14 | Son | — | Kansas |
| 12 | Betty F. Humphrey | 9 | Daughter | — | Kansas |
| 13 | Charles A. Cox | 47 | Head | City Fireman | Kansas |
| 14 | Elnora Cox | 39 | Wife | — | Texas |
| 15 | Charles A. Jr. Cox | 15 | Son | — | Kansas |
| 16 | Meredith H. Cox | 10 | Son | — | Kansas |
| 17 | Duane H. Cox | 7 | Son | — | Kansas |
| 18 | Eva Frazier | 44 | Head | Seamstress | Louisiana |
| 19 | William Frazier | 16 | Son | New Worker | Kansas |
| 20 | — | None | — | — | — |
| 21 | Clotilde Handridge | 54 | Head | — | Louisiana |
| 22 | Margarette Handridge | 22 | Daughter | — | Kansas |
| 23 | Otto Handridge | 15 | Son | — | Kansas |
| 24 | Yasmine Oakley | 26 | Head | — | Kansas |
| 25 | Gerald Oakley | 5 | Son | — | Kansas |
| 26 | Sophia Oakley | 3 | Daughter | — | Kansas |
| 27 | Clementine Holloway | 52 | Head | Mail Clerk | Arkansas |
| 28 | Alpha Holloway | 51 | Wife | — | Missouri |
| 29 | Archie Brooks | 45 | Head | Machine Operator | Missouri |
| 30 | Luzina Jackson | 72 | Head | Laundress | Alabama |
| 31 | Lizzie Hobson | 49 | Head | — | Mississippi |
| 32 | Heaster Hobson | 27 | Son | Barber | Mississippi |
| 33 | Margaret Hobson | 35 | In Law | — | Mexico |
| 34 | Minor Brown | 18 | Boarder | — | Kansas |
| 35 | James J. William | 51 | Head | Policeman | Alabama |
| 36 | Mary E. William | 49 | Wife | — | Alabama |
| 37 | Andrew William | 16 | Son | — | Kansas |
| 38 | Mary E. William THIS PERSON | 13 | Daughter | — | Kansas |
| 39 | Phillip William | 11 | Son | — | Kansas |
| 40 | Theresa William | 8 | Daughter | — | 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)