MC
Margaret Carroll — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Margaret Carroll across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 11-person household.
Age 14
b. ~1926
Female
Daughter
Born: Penna
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Carroll |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Penna |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
| Township / Ward | Phila |
| Est. Birth Year | ~1926 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Louis Carroll | Son | — | 21 | ~1919 |
| Ann Carroll | Daughter | — | 10 | ~1930 |
| Joseph Carroll | Son | — | 15 | ~1925 |
| Louis Carroll | Head | — | 50 | ~1890 |
| Margaret Carroll | Daughter | — | 14 | ~1926 |
| Mary Carroll | Daughter | — | 21 | ~1919 |
| Robert Carroll | Son | — | 12 | ~1928 |
| Matthew Carroll | Son | — | 17 | ~1923 |
| Marguerite Carroll | Spouse | — | 47 | ~1893 |
| John Carroll | Son | — | 20 | ~1920 |
| James Carroll | Son | — | 11 | ~1929 |
Census Appearances
1930
Philadelphia, Pennsylvania
Daughter, age 4
Philadelphia, Pennsylvania · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Penna |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1940
Philadelphia-County, Pennsylvania
Daughter, age 14
Philadelphia-County, Pennsylvania · implied b. ~1926 — 11 household members
| Surname | Carroll |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Penna |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
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 Carroll across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Carroll
Daughter · 1940 · age 14 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
Joseph Carroll
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Carroll
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Carroll
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Carroll
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Carroll
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Carroll
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Carroll
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Carroll
Sibling · 1940 · age 17
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-t0627-03723-00744)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary A. Phillips | 69 | Head | Hairdresser | Penna |
| 42 | Anna L. Phillips | 63 | Sister | Nurse | Penna |
| 43 | Florence M. Phillips | 61 | Sister | Director Of Nurses | Penna |
| 44 | Benjamin J. Phillips | 58 | Brother | Accounting | Penna |
| 45 | George B. Phillips | 55 | Brother | Engraver | Penna |
| 46 | Joseph Schmidt | 74 | Head | Mechanist | Penna |
| 47 | Emil Schmidt | 44 | Son | Architect | Penna |
| 48 | Elizabeth Schmidt | 40 | Daughter-in-law | — | Maryland |
| 49 | Bertha Schmidt | 65 | Sister-in-law | — | Penna |
| 50 | Kolbe W. Schmidt | 60 | Sister-in-law | — | Penna |
| 51 | Josephine Dunn | 58 | Head | — | Eire |
| 52 | Peter L. Dunn | 31 | Son | Bakers Helper | Penna |
| 53 | John Dunn | 27 | Son | Manager | Penna |
| 54 | Michael W. Brown | 23 | Head | Salesman | Penna |
| 55 | Mercia S. Brown | 22 | Wife | — | Penna |
| 56 | Michael A. Brown | 1 | Son | — | New York |
| 57 | Susan S. Hecker | 82 | Head | — | Penna |
| 58 | Flora Hecker | 35 | Daughter | Reviewer | Penna |
| 59 | Marian H. Tyre | 44 | Head | Housekeeper | Penna |
| 60 | Jane W. Tyre | 12 | Daughter | — | Penna |
| 61 | Jane Lust | 53 | Lodger | Practical Nurse | Penna |
| 62 | Clare Wenzel | 25 | Lodger | Sales Girl | Penna |
| 63 | Jennie Rollo | 23 | Lodger | Office Work | Penna |
| 64 | Dr. Harold Freund | 24 | Lodger | Dentist | Penna |
| 65 | Louis J. Carroll | 50 | Head | Salesman Manager | Penna |
| 66 | Marguerite Carroll | 47 | Wife | Housewife | Penna |
| 67 | Mary Carroll | 21 | Daughter | Receptionist | Penna |
| 68 | Louis Jr. Carroll | 21 | Son | Salesman | Penna |
| 69 | John Carroll | 20 | Son | Filing | Penna |
| 70 | Matthew Carroll | 17 | Son | — | Penna |
| 71 | Joseph Carroll | 15 | Son | — | Penna |
| 72 | Margaret Carroll THIS PERSON | 14 | Daughter | — | Penna |
| 73 | Robert Carroll | 12 | Son | — | Penna |
| 74 | James Carroll | 11 | Son | — | Penna |
| 75 | Ann Carroll | 10 | Daughter | — | Penna |
| 76 | Edward J. Callahan | 62 | Head | Booking Agent | Penna |
| 77 | Mary Callahan | 54 | Wife | Housewife | Penna |
| 78 | Frank Callahan | 20 | Son | — | Penna |
| 79 | Helene Callahan | 19 | Son | — | Penna |
| 80 | Edward Jr. Callahan | 16 | Son | — | Penna |
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)