MC
Margaret Casey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Margaret Casey across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Casey |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | New Worker |
| Highest Grade | S-8 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1919 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| John Casey | Head | — | 76 | ~1864 |
| James Casey | Son | — | 20 | ~1920 |
| Agnes Casey | Daughter | — | 20 | ~1920 |
| Mary Casey | Spouse | — | 60 | ~1880 |
| Margaret Casey | Daughter | — | 21 | ~1919 |
| Charles Casey | Son | — | 28 | ~1912 |
| John Casey | Son | — | 30 | ~1910 |
| Joseph Casey | Son | — | 23 | ~1917 |
Census Appearances
1930
Philadelphia, Pennsylvania
Daughter, age 10
Philadelphia, Pennsylvania · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | Margaret |
| 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
Philadelphia-County, Pennsylvania
Daughter, age 21
Philadelphia-County, Pennsylvania · implied b. ~1919 — 8 household members
| Surname | Casey |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | New Worker |
| Highest Grade | S-8 |
| 1935 Residence | Pennsylvania |
| 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 Margaret Casey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Casey
Daughter · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
Joseph Casey
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Casey
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Casey
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Casey
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Casey
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-t0627-03724-00127)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Loretta Conti | 29 | Wife | Private Telephone Opr. | Pennsylvania |
| 42 | Frank Maffei | 43 | Head | Laborer | Italy |
| 43 | Julia Maffei | 38 | Wife | — | Pennsylvania |
| 44 | John F. Maffei | 12 | Son | — | Pennsylvania |
| 45 | Rosalie Maffei | 10 | Daughter | — | Pennsylvania |
| 46 | Jane M. Brown | 87 | Head | — | Ireland |
| 47 | Frank P. Brown | 52 | Son | Plumber | Pennsylvania |
| 48 | Harry M. Wallace | 38 | Head | Heat Insulator | Pennsylvania |
| 49 | Elizabeth Wallace | 38 | Wife | — | Pennsylvania |
| 50 | Elizabeth M. Wallace | 13 | Daughter | — | Pennsylvania |
| 51 | Ella M. Schiefer | 66 | Head | — | Pennsylvania |
| 52 | Katharine M. Schiefer | 71 | Sister | — | Pennsylvania |
| 53 | William G. Schiefer | 65 | Brother | — | Pennsylvania |
| 54 | William G. Perkins | 47 | Nephew | — | Pennsylvania |
| 55 | John Casey | 76 | Head | — | England |
| 56 | Mary V. Casey | 60 | Wife | — | Pennsylvania |
| 57 | John J. Jr. Casey | 30 | Son | Ticket Collector | Pennsylvania |
| 58 | Charles A. Casey | 28 | Son | Janitor | Pennsylvania |
| 59 | Joseph P. Casey | 23 | Son | Bus Boy | Pennsylvania |
| 60 | Margaret M. Casey THIS PERSON | 21 | Daughter | New Worker | Pennsylvania |
| 61 | James J. Casey | 20 | Son | Delivery Boy | Pennsylvania |
| 62 | Agnes C. Casey | 20 | Daughter | New Worker | Pennsylvania |
| 63 | George W. Long | 67 | Head | Carpenter | Pennsylvania |
| 64 | Jane B. Long | 52 | Wife | — | Pennsylvania |
| 65 | Edgar U. Stevens | 67 | Lodger | Watchman | Pennsylvania |
| 66 | James J. Rowan | 39 | Head | Painter | Pennsylvania |
| 67 | Helena F. Rowan | 37 | Wife | Candy Packer | Pennsylvania |
| 68 | James J. Jr. Rowan | 18 | Son | Machinist Apprentice | Pennsylvania |
| 69 | Arthur G. Potts | 57 | Head | Shoe Cutter | Connecticut |
| 70 | Florence E. Potts | 50 | Wife | — | New Jersey |
| 71 | Harry Nichols | 34 | Son in Law | Motorman | Pennsylvania |
| 72 | Thelma V. Nichols | 30 | Daughter | — | New Jersey |
| 73 | Dorothy M. Nichols | 11 | Grand Daughter | — | Pennsylvania |
| 74 | Margaret M. Nichols | 10 | Grand Daughter | — | Pennsylvania |
| 75 | Elizabeth L. Nichols | 7 | Grand Daughter | — | Pennsylvania |
| 76 | Julia C. Hudson | 80 | Head | — | Pennsylvania |
| 77 | Joseph E. Hudson | 50 | Son | Locomotive Engineer | Pennsylvania |
| 78 | Richard D. Hudson | 49 | Son | Hammerman | Pennsylvania |
| 79 | — | None | — | — | — |
| 80 | Bridget B. Whitmore | 64 | Head | — | 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)