MD
Mary Donahue — 1940 US Census Record
Model Tree available1940 United States Federal Census · Erie-County, New York
Our Model Tree links this Mary Donahue across the 1920, 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed), with identified parents Nellie & Nicholas — first a daughter (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Donahue |
| Given Name | Mary P |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Buffalo city |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Erie County |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2369 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Stenographer |
| Township / Ward | Buffalo City |
| Est. Birth Year | ~1911 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Donahue | Daughter | — | 28 | ~1912 |
| Mary Donahue | Daughter | — | 29 | ~1911 |
| Nicholas Donahue | Head | — | 65 | ~1875 |
Census Appearances
Daughter, age 9
Erie, New York · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donohue |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Erie, New …
Daughter, age 19
Erie, New York · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahue |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Stenographer |
| Industry | Private |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Erie-County, New …
Daughter, age 29
Erie-County, New York · implied b. ~1911 — 3 household members
| Surname | Donahue |
| Given Name | Mary P |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Buffalo city |
| 1935 Residence (County) | Erie |
| Occupation | Stenographer |
| Industry | Erie County |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2369 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Donahue across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Nellie Donahue (~0.92 confidence) and father Nicholas Donahue (~0.92 confidence) and mother Mary Donohue (~0.92 confidence) and father Nicholas Donohue (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Nellie Donahue
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
Nicholas Donahue
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Donohue
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
Nicholas Donohue
b. ~1876
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Donahue
Daughter · 1940 · age 29 · b. ~1911 · New York
★ You are viewing this record
Sibling
Margaret Donahue
Sibling · 1940 · age 28
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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02823-00912)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Allan Theodore | 6 | Son | — | New York |
| 2 | George Jr Theodore | 4 | Son | — | New York |
| 3 | Marilyn Theodore | 1 | Daughter | — | New York |
| 4 | James D Kennedy | 30 | Head | General Chassis Foreman | New Jersey |
| 5 | Madeline Kennedy | 31 | Wife | — | Pennsylvania |
| 6 | Eleanor Kennedy | 10 | Daughter | — | New Jersey |
| 7 | James Jr Kennedy | 3 | Son | — | New York |
| 8 | Chester R Rue | 59 | Father in law | Carpenter | Pennsylvania |
| 9 | Mary K Rue | 55 | Mother in law | — | New Jersey |
| 10 | William Leary | 34 | Head | Fireman | New York |
| 11 | Salina S Leary | 36 | Wife | — | New York |
| 12 | William W Jr Leary | 5 | Son | — | New York |
| 13 | Donald C Leary | 3 | Son | — | New York |
| 14 | John Vincent Leary | 2 | Son | — | New York |
| 15 | Paul F Leary | 1 | Son | — | New York |
| 16 | John D Howell | 41 | Head | Marine Engineer | Michigan |
| 17 | Frieda Howell | 44 | Wife | — | Michigan |
| 18 | Donald Howell | 14 | Son | — | Michigan |
| 19 | Janice Howell | 12 | Daughter | — | Michigan |
| 20 | Clarence D O'Keefe | 37 | Head | Fireman | New York |
| 21 | Margaret O'Keefe | 30 | Wife | — | New York |
| 22 | John O'Keefe | 5 | Son | — | New York |
| 23 | Mary Ann O'Keefe | 4 | Daughter | — | New York |
| 24 | Ellen O'Keefe | 2 | Daughter | — | New York |
| 25 | Cecil Deane | 43 | Head | Proprietor | Massachusetts |
| 26 | Martha D Deane | 38 | Wife | — | Illinois |
| 27 | Carol Deane | 13 | Daughter | — | New York |
| 28 | Sarah D Neville | 74 | Head | — | New York |
| 29 | Raymond Neville | 52 | Son | Laborer | New York |
| 30 | James Neville | 50 | Son | Laborer | New York |
| 31 | John J Winter | 46 | Head | Senior Searcher | New York |
| 32 | Genevieve Winter | 43 | Wife | — | New York |
| 33 | Earl W Hessler | 39 | Head | Locomotive Fireman | New York |
| 34 | Gladys D Hessler | 36 | Wife | — | New York |
| 35 | Audrey Hessler | 11 | Daughter | — | New York |
| 36 | William Hessler | 6 | Son | — | New York |
| 37 | Elizabeth Adams | 71 | Mother-in-law | — | New York |
| 38 | Nicholas J Donahue | 65 | Head | Patrolman | New York |
| 39 | Mary P Donahue THIS PERSON | 29 | Daughter | Stenographer | New York |
| 40 | Margaret E Donahue | 28 | Daughter | Stenographer | New York |
Related Census Records
Pedigree Summary
Mary + 1 sibling
Gen 1 · 4 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)