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Mary Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wyandotte-County, Kansas
Our Model Tree links this Mary Mahoney across the 1930 and 1940 US Censuses in Wyandotte-County, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wyandotte-County, Kansas |
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Kansas City |
| 1935 Residence (County) | Wyandotte |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Kansas City |
| Est. Birth Year | ~1928 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Frances Mahoney | Daughter | — | 16 | ~1924 |
| Mary Mahoney | Daughter | — | 12 | ~1928 |
| Helen Mahoney | Daughter | — | 11 | ~1929 |
| Charles Mahoney | Head | — | 52 | ~1888 |
| Mary Muller | Other | — | 72 | ~1868 |
| John Mahoney | Son | — | 19 | ~1921 |
| Dennis Mahoney | Son | — | 8 | ~1932 |
| Charles Mahoney | Son | — | 15 | ~1925 |
| James Mahoney | Son | — | 18 | ~1922 |
| Lea Mahoney | Spouse | — | 51 | ~1889 |
Census Appearances
1930
Wyandotte, Kansas
Daughter, age 1
Wyandotte, Kansas · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Wyandotte-County, Kansas
Daughter, age 12
Wyandotte-County, Kansas · implied b. ~1928 — 10 household members
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Kansas City |
| 1935 Residence (County) | Wyandotte |
| Highest Grade | No 6 |
| 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 Mahoney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mahoney
Daughter · 1940 · age 12 · b. ~1928 · Kansas
★ You are viewing this record
Sibling
James Mahoney
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mahoney
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dennis Mahoney
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Mahoney
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mahoney
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mahoney
Sibling · 1940 · age 11
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-t0627-01269-00828)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wilbur Hays | 36 | Head | Switchman | Kansas |
| 2 | Tresa Hays | 31 | Wife | — | Kansas |
| 3 | Lawrence Hays | 12 | Son | — | Kansas |
| 4 | Eileen Hays | 3 | Daughter | — | Kansas |
| 5 | John Loschke | 50 | Head | Bottler | Kansas |
| 6 | Elizabeth Loschke | 50 | Wife | — | Kansas |
| 7 | Royal Byer | 62 | Head | — | Missouri |
| 8 | Anna Byer | 62 | Wife | — | Illinois |
| 9 | John Hurd | 32 | Head | Truck Driver | Kansas |
| 10 | Helen Hurd | 25 | Wife | — | Kansas |
| 11 | Donald Hurd | 4 | Son | — | Kansas |
| 12 | Raymond Neugebauer | 43 | Head | Truck Driver | Kansas |
| 13 | Helen Neugebauer | 42 | Wife | — | Kansas |
| 14 | Rose Mary Neugebauer | 19 | Daughter | — | Kansas |
| 15 | Raymond Jr. Neugebauer | 17 | Son | — | Kansas |
| 16 | Rita Neugebauer | 15 | Daughter | — | Kansas |
| 17 | Frances Neugebauer | 10 | Daughter | — | Kansas |
| 18 | Gene Neugebauer | 5 | Son | — | Kansas |
| 19 | James Ryan | 58 | Head | Barrel Planer | Kansas |
| 20 | Eva Ryan | 51 | Wife | — | Missouri |
| 21 | Charles Mahoney | 52 | Head | General Farm | Kansas |
| 22 | Lea Mahoney | 51 | Wife | — | Kansas |
| 23 | John Mahoney | 19 | Son | — | Kansas |
| 24 | James Mahoney | 18 | Son | — | Kansas |
| 25 | Frances Mahoney | 16 | Daughter | — | Kansas |
| 26 | Charles Mahoney | 15 | Son | — | Kansas |
| 27 | Mary Mahoney THIS PERSON | 12 | Daughter | — | Kansas |
| 28 | Helen Mahoney | 11 | Daughter | — | Kansas |
| 29 | Dennis Mahoney | 8 | Son | — | Kansas |
| 30 | Mary C. Muller | 72 | Mother-in-law | — | Illinois |
| 31 | John H. Patch | 36 | Head | Clerk | Kansas |
| 32 | Nina Patch | 31 | Wife | — | Ohio |
| 33 | John C. Patch | 15 | Son | — | Kansas |
| 34 | Jerry Ponton | 72 | Father-in-law | Freight Handler | Ohio |
| 35 | James Schoolcraft | 38 | Head | Manager | Kentucky |
| 36 | Rose Schoolcraft | 36 | Wife | — | Germany |
| 37 | James J. Schoolcraft | 3 | Son | — | Kansas |
| 38 | Robert J. Schoolcraft | 1 | Son | — | Kansas |
| 39 | Emma Toelle | 52 | Head | Seamstress | Kansas |
| 40 | Helen Toelle | 26 | Daughter | Contometer | 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)