MC
Mary Carroll — 1920 US Census Record
Model Tree available1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Mary Carroll across the 1900, 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed), with identified parents Christopher & Mary — first a daughter (b.~1899), then head of a 5-person household.
Age 21
b. ~1899
Female
Daughter
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Carroll |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Examiner |
| Industry | Department store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Examiner |
| Township / Ward | City Of Philadelphia |
| Est. Birth Year | ~1899 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eva Carroll | Daughter | — | 19 | ~1901 |
| Mary Carroll | Daughter | — | 21 | ~1899 |
| Mary Carroll | Daughter | — | 25 | ~1895 |
| Christopher Carroll | Head | — | 62 | ~1858 |
| Mary Carroll | Spouse | — | 62 | ~1858 |
Census Appearances
1900
Philadelphia, Pennsylvania
Daughter, age 2
Philadelphia, Pennsylvania · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Birth Month | May |
| Birth Year | 1898 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1910
Philadelphia, Pennsylvania
Daughter, age 11
Philadelphia, Pennsylvania · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Daughter, age 21
Philadelphia, Pennsylvania · implied b. ~1899 — 5 household members
| Surname | Carroll |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Examiner |
| Industry | Department store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 Carroll across 3 US Census years (1900, 1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage. Identified parents: father Christopher Carroll (~0.92 confidence) and mother Mary Carroll (~0.92 confidence) and mother Mary Carroll (~0.92 confidence) and mother Annie Carroll (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Christopher Carroll
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
Mary Carroll
b. ~1858
Source mother
● Household
· direct · ~0.92
Mother
Mary Carroll
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Annie Carroll
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Carroll
Daughter · 1920 · age 21 · b. ~1899 · Pennsylvania
★ You are viewing this record
Sibling
Mary Carroll
Sibling · 1920 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Carroll
Sibling · 1920 · age 19
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
1920 US Federal Census — Philadelphia, Pennsylvania
Open full size
1920 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1626unit:0353)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Robert Pickering | 10 | Step-son | — | Pennsylvania |
| 52 | Julia Cunningham | 57 | Head | Haggler | Pennsylvania |
| 53 | James Cunningham | 14 | Son | — | Pennsylvania |
| 54 | Mary Cunningham | 12 | Daughter | — | Pennsylvania |
| 55 | Francis Cunningham | 9 | Son | — | Pennsylvania |
| 56 | Mary D'Ran | 73 | Aunt | — | Ireland |
| 57 | Patrick Howley | 32 | Head | Rivet-Tester | England |
| 58 | Julia Howley | 31 | Wife | — | Ireland |
| 59 | Karl Schmidt | 45 | Head | Baker | Germany |
| 60 | Mary Schmidt | 47 | Wife | — | Germany |
| 61 | Pauline Vila | 21 | Daughter | Mender | Pennsylvania |
| 62 | Frederick Vila | 14 | Step-son | — | Pennsylvania |
| 63 | Mary White | None | Lodger | Burler | Ireland |
| 64 | Paul Bergman | 75 | Head | Peddler | Germany |
| 65 | Madeline Bergman | 73 | Wife | — | Germany |
| 66 | Madeline Montgomery | 39 | Daughter | — | Pennsylvania |
| 67 | Margaret Montgomery | 12 | Grandchild | — | California |
| 68 | Anna Barham | 37 | Daughter | — | Pennsylvania |
| 69 | John Barham | 24 | Grandchild | Checker | Ohio |
| 70 | Charles Jadon | 45 | Head | Machinist | Germany |
| 71 | Wilhelmina Jadon | 43 | Wife | — | Germany |
| 72 | Ella Jadon | 18 | Daughter | Spinner | Germany |
| 73 | Arthur Jadon | 11 | Son | — | Pennsylvania |
| 74 | Joseph Naminski | 30 | Head | Iron-Layer | Poland |
| 75 | Rose Naminski | 26 | Wife | — | Poland |
| 76 | Joseph Rakowski | 41 | Head | Finisher | Austria |
| 77 | Julia Rakowski | 47 | Wife | — | Austria |
| 78 | Henry Mccann | 58 | Head | — | Scotland |
| 79 | Agnes Mccann | 25 | Daughter | Examiner | Pennsylvania |
| 80 | Mary Mccann | 20 | Daughter | Stenographer | Pennsylvania |
| 81 | Christopher Carroll | 62 | Head | Painter | Pennsylvania |
| 82 | Mary Carroll | 62 | Wife | — | Pennsylvania |
| 83 | Mary Carroll | 25 | Daughter | Stenographer | Pennsylvania |
| 84 | Mary Carroll THIS PERSON | 21 | Daughter | Examiner | Pennsylvania |
| 85 | Eva Carroll | 19 | Daughter | Examiner | Pennsylvania |
| 86 | Joseph Seitz | 29 | Head | Production Clerk | Pennsylvania |
| 87 | Viola Seitz | 26 | Wife | — | Pennsylvania |
| 88 | Stanley Seitz | 10 | Son | — | Pennsylvania |
| 89 | Joseph Seitz | 7 | Son | — | Pennsylvania |
| 90 | Caroline Aberle | 45 | Mother-in-law | Saleswoman | Pennsylvania |
| 91 | Michael J. Forstall | 54 | Head | Janitor | Ireland |
| 92 | Catherine Forstall | 52 | Wife | — | Pennsylvania |
| 93 | Marie Forstall | 24 | Daughter | Burler | Pennsylvania |
| 94 | Joseph Party | 29 | Head | Ship-Fitter | Pennsylvania |
| 95 | Elizabeth Party | 24 | Wife | — | Pennsylvania |
| 96 | Joseph Party | 4 | Son | — | Pennsylvania |
| 97 | Elizabeth Party | 4 | Daughter | — | Pennsylvania |
| 98 | Edward Party | 0 | Son | — | Pennsylvania |
| 99 | Robert Ganjack | 58 | Head | Weaver | Germany |
| 100 | Josephine Ganjack | 55 | Wife | Weaver | Germany |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)