MH
Mary Henderson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Mary Henderson across the 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 10
b. ~1920
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Henderson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1920 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Henderson | Daughter | — | 16 | ~1914 |
| Mary Henderson | Daughter | — | 10 | ~1920 |
| Catherine Henderson | Daughter | — | 12 | ~1918 |
| Lillian Henderson | Daughter | — | 4 | ~1926 |
| Margaret Henderson | Daughter | — | 14 | ~1916 |
| Lillian Henderson | Head | — | 30 | ~1900 |
| William Henderson | Son | — | 8 | ~1922 |
| James Henderson | Son | — | ~1930 | |
| Robert Henderson | Son | — | 6 | ~1924 |
| John Henderson | Son | — | 2 | ~1928 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age
Allegheny, Pennsylvania · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 10
Allegheny, Pennsylvania · implied b. ~1920 — 10 household members
| Surname | Henderson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| 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 Henderson across 2 US Census years (1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Henderson
Daughter · 1930 · age 10 · b. ~1920 · Pennsylvania
★ You are viewing this record
Sibling
Catherine Henderson
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Henderson
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Henderson
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Henderson
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Henderson
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Henderson
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Henderson
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Henderson
Sibling · 1930 · age
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
1930 US Federal Census — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1974:0917)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Wilson S Shea | 28 | Head | Police | Pennsylvania |
| 52 | Irene M Shea | 27 | Wife | — | Pennsylvania |
| 53 | Wilson S Jr Shea | 4 | Son | — | Pennsylvania |
| 54 | Mary Alice Shea | 2 | Daughter | — | Pennsylvania |
| 55 | Joseph Lupinski | 38 | Head | Laborer | Lithuania |
| 56 | Mary Lupinski | 38 | Wife | — | Lithuania |
| 57 | Joseph Lupinski | 17 | Son | — | Pennsylvania |
| 58 | Victoria Lupinski | 15 | Daughter | — | Pennsylvania |
| 59 | Michael Mcgarry | 32 | Head | Laborer | Ireland Northern |
| 60 | Catherine Mcgarry | 30 | Wife | — | Ireland Northern |
| 61 | John Mcgarry | 6 | Son | — | Pennsylvania |
| 62 | William Mcgarry | 4 | Son | — | Pennsylvania |
| 63 | Michael Mcgarry | 2 | Son | — | Pennsylvania |
| 64 | John Keane | 45 | Head | Laborer | Ireland Northern |
| 65 | Catherine Keane | 44 | Wife | — | Ireland Northern |
| 66 | John Keane | 19 | Son | Laborer | Pennsylvania |
| 67 | Mary Keane | 16 | Daughter | — | Pennsylvania |
| 68 | Alice Keane | 14 | Daughter | — | Pennsylvania |
| 69 | John Corcoran | 40 | Head | Laborer | Ireland Northern |
| 70 | Mary Corcoran | 40 | Wife | — | Ireland Northern |
| 71 | Lillian Henderson | 30 | Head | — | Pennsylvania |
| 72 | William Henderson | 8 | Son | — | Pennsylvania |
| 73 | Robert Henderson | 6 | Son | — | Pennsylvania |
| 74 | Lillian Henderson | 4 | Daughter | — | Pennsylvania |
| 75 | John Henderson | 2 | Son | — | Pennsylvania |
| 76 | James Henderson | 0 | Son | — | Pennsylvania |
| 77 | Mary Henderson THIS PERSON | 10 | Daughter | — | Pennsylvania |
| 78 | Catherine Henderson | 12 | Daughter | — | Pennsylvania |
| 79 | Margaret Henderson | 14 | Daughter | — | Pennsylvania |
| 80 | Elizabeth Henderson | 16 | Daughter | — | Pennsylvania |
| 81 | Joseph Schreger | 31 | Head | Laborer | Germany |
| 82 | Julia Schreger | 29 | Wife | — | Germany |
| 83 | Catherine Schreger | 1 | Daughter | — | Pennsylvania |
| 84 | Thomas Thompson | 43 | Head | Laborer | Scotland |
| 85 | Jessie Thompson | 42 | Wife | — | Scotland |
| 86 | Alice Thompson | 15 | Daughter | — | Scotland |
| 87 | Thomas Thompson | 11 | Son | — | Scotland |
| 88 | Douglas Thompson | 5 | Son | — | Scotland |
| 89 | John Lawrence | 31 | Head | Laborer | England |
| 90 | Mary Lawrence | 29 | Wife | — | England |
| 91 | John Lawrence | 4 | Son | — | Pennsylvania |
| 92 | James Lawrence | 2 | Son | — | Pennsylvania |
| 93 | Paul Kovach | 42 | Head | Laborer | Czechoslovakia |
| 94 | Mary Kovach | 63 | Mother-in-law | — | Czechoslovakia |
| 95 | John Kovach | 31 | Brother-in-law | Laborer | Czechoslovakia |
| 96 | Alex Tudrick | 43 | Head | Laborer | Czechoslovakia |
| 97 | Victoria Tudrick | 43 | Wife | — | Czechoslovakia |
| 98 | John Tudrick | 20 | Son | Laborer | Pennsylvania |
| 99 | Mary Tudrick | 18 | Daughter | — | Pennsylvania |
| 100 | Stephen Tudrick | 15 | Son | — | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)