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Katherine Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Katherine Martin across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Martin |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Rosalie Martin | Daughter | — | 19 | ~1921 |
| Peter Martin | Son | — | 14 | ~1926 |
| Edward Martin | Son | — | 11 | ~1929 |
| Mary Martin | Daughter | — | 20 | ~1920 |
| Katherine Martin | Daughter | — | 15 | ~1925 |
| Rose Martin | Spouse | — | 50 | ~1890 |
| Agnes Martin | Daughter | — | 13 | ~1927 |
| Edward Martin | Head | — | 50 | ~1890 |
Census Appearances
1930
Philadelphia, Pennsylvania
Daughter, age 4
Philadelphia, Pennsylvania · implied b. ~1926 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Katherine |
| 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
Philadelphia-County, Pennsylvania
Daughter, age 15
Philadelphia-County, Pennsylvania · implied b. ~1925 — 8 household members
| Surname | Martin |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Highest Grade | Hs 2 |
| 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 Katherine Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Katherine Martin
Daughter · 1940 · age 15 · b. ~1925 · Pennsylvania
★ You are viewing this record
Sibling
Peter Martin
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Martin
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Martin
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosalie Martin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Martin
Sibling · 1940 · age 20
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03715-00586)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Martin | 50 | Head | Stationary Engineer | Northern Ireland |
| 42 | Rose Martin | 50 | Wife | — | Northern Ireland |
| 43 | Mary Martin | 20 | Daughter | New Worker | Pennsylvania |
| 44 | Rosalie Martin | 19 | Daughter | Packer | Pennsylvania |
| 45 | Katherine Martin THIS PERSON | 15 | Daughter | — | Pennsylvania |
| 46 | Peter Martin | 14 | Son | — | Pennsylvania |
| 47 | Agnes Martin | 13 | Daughter | — | Pennsylvania |
| 48 | Edward Martin | 11 | Son | — | Pennsylvania |
| 49 | Abram J. Siebergall | 49 | Head | Jeweler | Austria |
| 50 | Beatrice Siebergall | 45 | Wife | — | Austria |
| 51 | Estelle M. Siebergall | 18 | Daughter | Bookkeeping | Pennsylvania |
| 52 | Anna Wallch | 58 | Sister | — | Austria |
| 53 | William E. Brown | 51 | Head | Chauffeur | Pennsylvania |
| 54 | Emilie Brown | 47 | Wife | — | Pennsylvania |
| 55 | Doris Brown | 17 | Daughter | — | Pennsylvania |
| 56 | William Brown | 16 | Son | — | Pennsylvania |
| 57 | Richard Hayes | 59 | Head | Bar Tender | New York |
| 58 | Theresa Hayes | 48 | Wife | Waitress | Northern Ireland |
| 59 | Louis Petrone | 31 | Head | Truck Driver | Pennsylvania |
| 60 | Anna Petrone | 29 | Wife | — | Pennsylvania |
| 61 | Joseph Petrone | 4 | Son | — | Pennsylvania |
| 62 | Alexander Andigo | 39 | Head | Sign Erector | Pennsylvania |
| 63 | Dorothy Andigo | 33 | Wife | — | Austria |
| 64 | Percy Michael | 21 | Ward | Laborer Digging | Pennsylvania |
| 65 | Casimir Buchhofer | 34 | Head | Chauffeur | Pennsylvania |
| 66 | Ella Buchhofer | 34 | Wife | — | Pennsylvania |
| 67 | Margaret Buchhofer | 10 | Daughter | — | Pennsylvania |
| 68 | William Dougherty | 40 | Head | Truck Driver | Pennsylvania |
| 69 | Anna Dougherty | 38 | Wife | — | Pennsylvania |
| 70 | William Dougherty | 18 | Son | Clerk | Pennsylvania |
| 71 | James Dougherty | 12 | Son | — | Pennsylvania |
| 72 | Paul Dougherty | 15 | Son | — | Pennsylvania |
| 73 | Victor Girard | 39 | Head | Clerk | Pennsylvania |
| 74 | Catherine Girard | 34 | Wife | — | Pennsylvania |
| 75 | Edwetta Girard | 12 | Daughter | — | Pennsylvania |
| 76 | Margaret Girard | 11 | Daughter | — | Pennsylvania |
| 77 | Catherine Girard | 7 | Daughter | — | Pennsylvania |
| 78 | Joan Girard | 3 | Daughter | — | Pennsylvania |
| 79 | Gilbert Pearl | 22 | Head | Checker | Pennsylvania |
| 80 | Lillian Pearl | 18 | Wife | — | Pennsylvania |
Related Census Records
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)