MH
Mary Hoover — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cambria-County, Pennsylvania
Our Model Tree links this Mary Hoover across the 1930 and 1940 US Censuses in Cambria-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cambria-County, Pennsylvania |
| Surname | Hoover |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lilly Boro |
| 1935 Residence (County) | Cambria |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Lilly Boro |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Hoover | Head | — | 48 | ~1892 |
| Helen Hoover | Spouse | — | 46 | ~1894 |
| Genevieve Hoover | Daughter | — | 8 | ~1932 |
| John Hoover | Son | — | 6 | ~1934 |
| Mary Hoover | Daughter | — | 13 | ~1927 |
| Helen Hoover | Daughter | — | 11 | ~1929 |
| Anne Hoover | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Cambria, Pennsylvania
Daughter, age 4
Cambria, Pennsylvania · implied b. ~1926 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoover |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Cambria-County, Pennsylvania
Daughter, age 13
Cambria-County, Pennsylvania · implied b. ~1927 — 7 household members
| Surname | Hoover |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lilly Boro |
| 1935 Residence (County) | Cambria |
| Highest Grade | 7 |
| 1935 Residence | Same House |
| 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 Hoover across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hoover
Daughter · 1940 · age 13 · b. ~1927 · Pennsylvania
★ You are viewing this record
Sibling
John Hoover
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Hoover
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Genevieve Hoover
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Hoover
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 — Cambria-County, Pennsylvania
Open full size
1940 US Federal Census — Cambria-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03456-00051)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rose Matthews | 16 | Granddaughter | Teachers Aide | Pennsylvania |
| 2 | Thomas Muldoon | 24 | Head | Miner | Pennsylvania |
| 3 | Cecelia Muldoon | 20 | Wife | — | Pennsylvania |
| 4 | Francis Muldoon | 37 | Head | Miner | Pennsylvania |
| 5 | Ann Muldoon | 42 | Wife | — | Pennsylvania |
| 6 | John Muldoon | 15 | Son | — | Pennsylvania |
| 7 | Rosalie Muldoon | 8 | Daughter | — | Pennsylvania |
| 8 | Herbert Muldoon | 4 | Son | — | Pennsylvania |
| 9 | Earl Hughes | 45 | Head | Stable Boss | Pennsylvania |
| 10 | Nellie Hughes | 40 | Wife | — | Pennsylvania |
| 11 | Earl Hughes | 17 | Son | — | Pennsylvania |
| 12 | Rose Hughes | 14 | Daughter | — | Pennsylvania |
| 13 | Richard Hughes | 11 | Son | — | Pennsylvania |
| 14 | John Hoover | 48 | Head | Insurance Agent | West Virginia |
| 15 | Helen Hoover | 46 | Wife | — | Hungary |
| 16 | Mary Hoover THIS PERSON | 13 | Daughter | — | Pennsylvania |
| 17 | Helen Hoover | 11 | Daughter | — | Pennsylvania |
| 18 | Anne Hoover | 10 | Daughter | — | Pennsylvania |
| 19 | Genevieve Hoover | 8 | Daughter | — | Pennsylvania |
| 20 | John Hoover | 6 | Son | — | Pennsylvania |
| 21 | Albert Mcmullen | 42 | Head | Laborer | Pennsylvania |
| 22 | Lillie Mcmullen | 37 | Wife | — | Pennsylvania |
| 23 | Robert Mcmullen | 14 | Son | — | Pennsylvania |
| 24 | Patricia Mcmullen | 12 | Daughter | — | Pennsylvania |
| 25 | Doris Mcmullen | 5 | Daughter | — | Pennsylvania |
| 26 | Sarah Termeferber | 80 | Mother-in-law | — | Pennsylvania |
| 27 | George Miller | 46 | Head | Truck Driver | Pennsylvania |
| 28 | Ann Miller | 40 | Wife | — | Pennsylvania |
| 29 | William Miller | 18 | Son | Truck Driver | Pennsylvania |
| 30 | Francis Miller | 15 | Son | — | Pennsylvania |
| 31 | Delmar Miller | 8 | Son | — | Pennsylvania |
| 32 | John Morris | 53 | Head | Miner | Pennsylvania |
| 33 | Mae Morris | 36 | Wife | — | Pennsylvania |
| 34 | John Gall | 56 | Head | Miner | Hungary |
| 35 | Margaret Gall | 53 | Wife | — | Hungary |
| 36 | Francis Gall | 30 | Son | Teacher | Pennsylvania |
| 37 | Andrew Gall | 24 | Son | Agent | Pennsylvania |
| 38 | John Gall | 22 | Son | Auto Salesman | Pennsylvania |
| 39 | Charles Gall | 20 | Son | Laborer | Pennsylvania |
| 40 | Margaret Gall | 14 | Daughter | — | Pennsylvania |
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)