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Mary Mckinney — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Delaware, Pennsylvania
Our Model Tree links this Mary Mckinney across the 1930 and 1940 US Censuses in Delaware, 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 | Delaware, Pennsylvania |
| Surname | McKinney |
| 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 | Chester 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 |
|---|---|---|---|---|
| Lena Mckinney | Other | — | 41 | ~1889 |
| William Mckinney | Son | — | 17 | ~1913 |
| Joseph Mckinney | Son | — | 8 | ~1922 |
| John Mckinney | Head | — | 46 | ~1884 |
| Teresa Mckinney | Daughter | — | 5 | ~1925 |
| Edward Mckinney | Son | — | 2 | ~1928 |
| John Mckinney | Son | — | 19 | ~1911 |
| James Mckinney | Son | — | 12 | ~1918 |
| Emma Mckinney | Daughter | — | 14 | ~1916 |
| Mary Mckinney | Daughter | — | 10 | ~1920 |
Census Appearances
1930
Delaware, Pennsylvania
Daughter, age 10
Delaware, Pennsylvania · implied b. ~1920 — 10 household members
| Surname | McKinney |
| 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 |
1940
Delaware-County, Pennsylvania
Daughter, age 19
Delaware-County, Pennsylvania · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKenney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Nether Providence |
| 1935 Residence (County) | Delaware |
| Occupation | Domestic |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 13 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 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 Mckinney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mckinney
Daughter · 1930 · age 10 · b. ~1920 · Pennsylvania
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Sibling
Emma Mckinney
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mckinney
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mckinney
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mckinney
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mckinney
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Mckinney
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mckinney
Sibling · 1930 · age 2
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 — Delaware, Pennsylvania
Open full size
1930 US Federal Census — Delaware, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2030:0087)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Mckinney | 46 | Head | Riveter | Pennsylvania |
| 2 | Lena Mckinney | 41 | Wife-H | — | Pennsylvania |
| 3 | John Mckinney | 19 | Son | Set Knives | Pennsylvania |
| 4 | William Mckinney | 17 | Son | Truck Boy | Pennsylvania |
| 5 | Emma Mckinney | 14 | Daughter | — | Pennsylvania |
| 6 | James Mckinney | 12 | Son | — | Pennsylvania |
| 7 | Mary Mckinney THIS PERSON | 10 | Daughter | — | Pennsylvania |
| 8 | Joseph Mckinney | 8 | Son | — | Pennsylvania |
| 9 | Teresa Mckinney | 5 | Daughter | — | Pennsylvania |
| 10 | Edward Mckinney | 2 | Son | — | Pennsylvania |
| 11 | Robert Tingle | 29 | Head | Grinder | Delaware |
| 12 | Mary Tingle | 27 | Wife-H | — | Virginia |
| 13 | James Ponzi | 46 | Head | Foreman | Italy |
| 14 | Albina Ponzi | 37 | Wife-H | — | Italy |
| 15 | Grace Ponzi | 19 | Daughter | Spinner | Pennsylvania |
| 16 | Henry Ponzi | 17 | Son | — | Pennsylvania |
| 17 | John Bunningham | 75 | Head | Watchman | Maryland |
| 18 | Susie Bunningham | 66 | Wife-H | — | Maryland |
| 19 | James Bunningham | 33 | Nephew | Printer | Delaware |
| 20 | Frank Bischofsberger | 37 | Head | Pipefitter | Pennsylvania |
| 21 | Eva Bischofsberger | 39 | Wife-H | — | Pennsylvania |
| 22 | Irma Bischofsberger | 11 | Daughter | — | Pennsylvania |
| 23 | Mary Gross | 56 | Mother-in-law | — | Pennsylvania |
| 24 | Thomas Gross | 37 | Brother-in-law | Chipper | Pennsylvania |
| 25 | Frank Clark | 43 | Head | Pattern-Maker | Pennsylvania |
| 26 | Anna Clark | 43 | Wife-H | — | Pennsylvania |
| 27 | Helen Clark | 17 | Daughter | Stenog | Pennsylvania |
| 28 | Anastasia Clark | 15 | Daughter | — | Pennsylvania |
| 29 | Kathleen Clark | 11 | Daughter | — | Pennsylvania |
| 30 | Elizabeth Clark | 9 | Daughter | — | Pennsylvania |
| 31 | Frances Clark | 7 | B.by | — | Pennsylvania |
| 32 | Raymond Clark | 5 | Boy | — | Pennsylvania |
| 33 | Jane Clark | 1 | Daughter | — | Pennsylvania |
| 34 | John Corhill | 57 | Head | Alderman | Pennsylvania |
| 35 | Doloras Corhill | None | Daughter | — | Pennsylvania |
| 36 | Margarette Corhill | None | Daughter | — | Pennsylvania |
| 37 | Raymond Hirst | 33 | Head | Letter Carrier | Pennsylvania |
| 38 | Mary Hirst | 31 | Wife-H | — | Pennsylvania |
| 39 | Helen Hirst | 12 | Daughter | — | Pennsylvania |
| 40 | William Hirst | 8 | Son | — | Pennsylvania |
| 41 | John Hirst | 5 | Son | — | Pennsylvania |
| 42 | Mary E. Hirst | 2 | Daughter | — | Pennsylvania |
| 43 | Patrick Luttrell | 65 | Head | Engineer | Free State |
| 44 | George Luttrell | 28 | Son | Carrier-Line | Pennsylvania |
| 45 | Elizabeth Luttrell | 25 | Daughter | Stenog | Pennsylvania |
| 46 | Harry Rowan | 54 | Head | Painter | Pennsylvania |
| 47 | Jennie Rowan | 54 | Wife-H | — | England |
| 48 | Harry Rowan | 32 | Son | Repair Man | Pennsylvania |
| 49 | Jennie Tangreti | 34 | Head | — | Italy |
| 50 | Annie Tangreti | 8 | Daughter | — | Italy |
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)