MN
Mary Nixon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Nixon across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Nixon |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1925 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Alice Nixon | Daughter | — | 4 | ~1936 |
| Thomas Nixon | Son | — | 10 | ~1930 |
| Mary Nixon | Daughter | — | 15 | ~1925 |
| Mary Nixon | Spouse | — | 45 | ~1895 |
| Stanley Nixon | Head | — | 45 | ~1895 |
| Bridget O'Connell | Other | — | 81 | ~1859 |
| Catherine Nixon | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 5
Allegheny, Pennsylvania · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nixon |
| Given Name | Mary Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Georgia |
| Can Read/Write | No |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 15
Allegheny-County, Pennsylvania · implied b. ~1925 — 7 household members
| Surname | Nixon |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Nixon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Nixon
Daughter · 1940 · age 15 · b. ~1925 · Pennsylvania
★ You are viewing this record
Sibling
Catherine Nixon
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Nixon
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Nixon
Sibling · 1940 · age 10
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03658-00489)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Manshi | 29 | Wife | — | Pennsylvania |
| 2 | Helen Manshi | 7 | Daughter | — | Pennsylvania |
| 3 | John Lewandowski | 23 | Head | Laborer | Pennsylvania |
| 4 | Mildred Lewandowski | 22 | Wife | — | Pennsylvania |
| 5 | Lula Neal | 38 | Head | House Keeper | Virginia |
| 6 | Chris Scanakae | 42 | Head | Manager | Greece |
| 7 | Noma Scanakae | 35 | Wife | — | Pennsylvania |
| 8 | John Scanakae | 14 | Son | — | Pennsylvania |
| 9 | Paul Scanakae | 12 | Son | — | Pennsylvania |
| 10 | Paul Metropoli | 52 | Uncle | — | Greece |
| 11 | A Kelly | 32 | Boarder | Machinist | Pennsylvania |
| 12 | John Zikos | 39 | Head | Waiter | Greece |
| 13 | Stella Zikos | 28 | Wife | — | Greece |
| 14 | Peter Zikos | 9 | Son | — | Pennsylvania |
| 15 | Nicholas Zikos | 7 | Son | — | Pennsylvania |
| 16 | Michael B. Zikos | 5 | Son | — | Pennsylvania |
| 18 | Stanley W Nixon | 45 | Head | Electrician | Pennsylvania |
| 19 | Mary Nixon | 45 | Wife | — | Pennsylvania |
| 20 | Mary Ellen Nixon THIS PERSON | 15 | Daughter | — | Pennsylvania |
| 21 | Catherine Nixon | 13 | Daughter | — | Pennsylvania |
| 22 | Thomas Nixon | 10 | Son | — | Pennsylvania |
| 23 | Alice J Nixon | 4 | Daughter | — | Pennsylvania |
| 24 | Bridget O'Connell | 81 | Aunt | — | Ireland |
| 25 | George Purnell | 52 | Head | Laborer | Pennsylvania |
| 26 | George Jr Purnell | 8 | Son | — | Pennsylvania |
| 27 | Fred Fisher | 47 | Head | Railroad Fireman | Pennsylvania |
| 28 | Betty D. Fisher | 19 | Daughter | Newswriter | Pennsylvania |
| 30 | John A Donahoe | 51 | Head | Retail Merchant | Pennsylvania |
| 31 | John Jr Donahoe | 22 | Son | Meat Cutter | Pennsylvania |
| 32 | Peter Donahoe | 20 | Son | Delivery Clerk | Pennsylvania |
| 33 | Lewis D Noggy | 34 | Servant | Butler | Pennsylvania |
| 34 | Ann Noggy | 26 | Servant | Cook | Pennsylvania |
| 35 | Mary E Fields | 47 | Head | Waitress | Pennsylvania |
| 36 | Harriette Fields | 17 | Daughter | — | Pennsylvania |
| 37 | William Fields | 15 | Son | — | Pennsylvania |
| 38 | Eugene Fields | 13 | Son | — | Pennsylvania |
| 39 | James Fields | 12 | Son | — | Pennsylvania |
| 40 | John Phaston | 64 | Head | Porter | Virginia |
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)