MK
Mary Kerr — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Delaware, Pennsylvania
Our Model Tree links this Mary Kerr across the 1920 and 1930 US Censuses in Delaware, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1869), then head of a 5-person household.
Age 61
b. ~1869
Female
Spouse
Born: Wales
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Delaware, Pennsylvania |
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Wales |
| Age at First Marriage | 24 |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Wales |
| Birthplace (normalized) | wales |
| Township / Ward | Lansdowne Borough |
| Est. Birth Year | ~1869 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kerr | Daughter | — | 27 | ~1903 |
| Jane Kerr | Daughter | — | 24 | ~1906 |
| Mary Kerr | Spouse | — | 61 | ~1869 |
| Alexander Kerr | Head | — | 71 | ~1859 |
| Duncan Kerr | Son | — | 32 | ~1898 |
Census Appearances
1920
Delaware, Pennsylvania
Spouse, age 52
Delaware, Pennsylvania · implied b. ~1868 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Wales |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Wales |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | wales |
1930
Delaware, Pennsylvania
Spouse, age 61
Delaware, Pennsylvania · implied b. ~1869 — 5 household members
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Wales |
| Age at First Marriage | 24 |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Wales |
| Birthplace (normalized) | wales |
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 Kerr across 2 US Census years (1920 and 1930) in Delaware, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
Mary Kerr
Spouse · 1930 · age 61 · b. ~1869 · Pennsylvania
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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:fifteenthcensus00reel2031:0288)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Vaughan Smith | 32 | Head | — | Pennsylvania |
| 52 | Janet Smith | 29 | Wife | Teacher | Pennsylvania |
| 53 | James Smith | 5 | Son | — | Pennsylvania |
| 54 | Margaret Smith | 2 | Daughter | — | Pennsylvania |
| 55 | Burton Smith | 0 | Son | — | Pennsylvania |
| 56 | Abner Tonnebaum | 52 | Head | Salesman | Pennsylvania |
| 57 | Florence Tonnebaum | 72 | Mother | — | Canada English |
| 58 | Ralph L. Grubb | 30 | Head | Broker | Delaware |
| 59 | Aimee E. Grubb | 29 | Wife | — | New Jersey |
| 60 | G. Preston Grubb | 1 | Son | — | Delaware |
| 61 | Morris A. Grubb | 0 | Son | — | Delaware |
| 62 | John Lutz | 46 | Head | Foreman | Germany |
| 63 | Blanche Lutz | 35 | Wife | — | Pennsylvania |
| 64 | John Lutz | 1 | Son | — | Pennsylvania |
| 65 | Alexander Kerr | 71 | Head | Gardener | Irish Free State |
| 66 | Mary Kerr THIS PERSON | 61 | Wife | — | Wales |
| 67 | Duncan Kerr | 32 | Son | Helper | Pennsylvania |
| 68 | Mary B. Kerr | 27 | Daughter | — | Pennsylvania |
| 69 | Jane Kerr | 24 | Daughter | Clerk | Pennsylvania |
| 70 | Alex Kerr | 40 | Head | Plumber | Irish Free State |
| 71 | Susanne Kerr | 40 | Wife | — | Switzerland |
| 72 | Mary L. Kerr | 2 | Daughter | — | Pennsylvania |
| 73 | Robert S. Robinson | 32 | Head | Manager | Pennsylvania |
| 74 | Edna D. Robinson | 26 | Wife | — | Pennsylvania |
| 75 | Robert Jr. Robinson | 0 | Son | — | Pennsylvania |
| 76 | Charles Weber | 36 | Head | Clerk | Pennsylvania |
| 77 | Mabel Weber | 34 | Wife | — | Pennsylvania |
| 78 | Helen Weber | 3 | Daughter | — | Pennsylvania |
| 79 | Philip Holden | 27 | Head | Architect | Pennsylvania |
| 80 | Catherine Holden | 24 | Wife | — | Pennsylvania |
| 81 | George Earnest | 39 | Head | Salesman | Pennsylvania |
| 82 | Marie Earnest | 30 | Wife | Clerk | Pennsylvania |
| 83 | Milton S. Neidig | 64 | Head | — | Pennsylvania |
| 84 | Elizabeth Neidig | 57 | Wife | — | Pennsylvania |
| 85 | Edith Neidig | 33 | Daughter | Clerk | Pennsylvania |
| 86 | Godshaw | None | Head | Clerk | Pennsylvania |
| 87 | Helen Godshaw | None | Wife | — | Pennsylvania |
| 88 | Karl Albright | 37 | Head | Manager | Pennsylvania |
| 89 | Helen Albright | 29 | Wife | — | Pennsylvania |
| 90 | Doris Albright | 3 | Daughter | — | Pennsylvania |
| 91 | Fred. T. Buchhalter | 37 | Head | Barber | Pennsylvania |
| 92 | Minerva Buchhalter | 39 | Wife | — | Pennsylvania |
| 93 | Ruth L. Buchhalter | 13 | Daughter | — | Pennsylvania |
| 94 | Jane C. Buchhalter | 10 | Daughter | — | Pennsylvania |
| 95 | George Buchhalter | 33 | Brother | Salesman | Pennsylvania |
| 96 | Albert Miller | 34 | Head | Real Estate Agt | Pennsylvania |
| 97 | Grace L. Miller | 24 | Wife | — | Pennsylvania |
| 98 | Albert E. 3Rd Miller | 1 | Son | — | Pennsylvania |
| 99 | George H. Smith | 35 | Head | — | New York |
| 100 | Gladys M. Smith | 32 | Wife | — | New Jersey |
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)