GC
Gertrude Clark — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Gertrude Clark across the 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1900), then head of a 7-person household.
Age 20
b. ~1900
Female
Daughter
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Clark |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Clerk |
| 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 | Clerk |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1900 |
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.
7 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Katherine Clark | Daughter | — | 24 | ~1896 |
| Catherine Clark | Head | — | 57 | ~1863 |
| Regina Clark | Daughter | — | 17 | ~1903 |
| Frank Clark | Son | — | 26 | ~1894 |
| Eddie Clark | Son | — | 12 | ~1908 |
| Gertrude Clark | Daughter | — | 20 | ~1900 |
| Helen Clark | Daughter | — | 18 | ~1902 |
Census Appearances
1910
Philadelphia, Pennsylvania
Daughter, age 10
Philadelphia, Pennsylvania · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland English |
| Mother's Birthplace | Ireland English |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Daughter, age 20
Philadelphia, Pennsylvania · implied b. ~1900 — 7 household members
| Surname | Clark |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Occupation | Clerk |
| 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 Gertrude Clark across 2 US Census years (1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Gertrude Clark
Daughter · 1920 · age 20 · b. ~1900 · Pennsylvania
★ You are viewing this record
Sibling
Frank Clark
Sibling · 1920 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Regina Clark
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eddie Clark
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Clark
Sibling · 1920 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Clark
Sibling · 1920 · age 18
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
49 people indexed on this census page (ia:1920:14thcensusofpopu1645unit:0936)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret E. Hilda | 76 | Head | None | Pennsylvania |
| 2 | Margaret M. Hilda | 40 | Daughter | Teacher | Pennsylvania |
| 3 | Margaret H. Hilda | 34 | Daughter | Typist | Pennsylvania |
| 4 | Daniel J. Healy | 31 | Head | Clerk | Pennsylvania |
| 5 | Katherine Healy | 32 | Wife | None | Pennsylvania |
| 6 | Katherine Healy | 5 | Daughter | None | Pennsylvania |
| 7 | Celia Healy | 3 | Daughter | None | Pennsylvania |
| 8 | Daniel Healy | 1 | Son | None | Pennsylvania |
| 9 | Marjorie Healy | 0 | Daughter | None | Pennsylvania |
| 10 | Catherine Clark | 57 | Head | None | Pennsylvania |
| 11 | Frank Clark | 26 | Son | Contractor | Pennsylvania |
| 12 | Katherine Clark | 24 | Daughter | Housework | Pennsylvania |
| 13 | Gertrude Clark THIS PERSON | 20 | Daughter | Clerk | Pennsylvania |
| 14 | Helen Clark | 18 | Daughter | None | Pennsylvania |
| 15 | Regina Clark | 17 | Daughter | None | Pennsylvania |
| 16 | Eddie Clark | 12 | Son | None | Pennsylvania |
| 17 | James P. Brady | 63 | Head | Elevator | Pennsylvania |
| 18 | Ellen J. Brady | 59 | Wife | None | Pennsylvania |
| 19 | Eleanor Duff | 33 | Daughter | Housekeeper | Pennsylvania |
| 20 | Eleanor M. Duff | 11 | Granddaughter | None | Pennsylvania |
| 21 | Virginia Duff | 37 | Boarder | Trainer | Virginia |
| 22 | Katherine Duff | 32 | Boarder | None | Virginia |
| 23 | Thomas M. Wolf | 30 | Boarder | Engineer | Pennsylvania |
| 24 | Albert Adams | 29 | Boarder | Clerk | New Jersey |
| 25 | Robert H. Snyder | 26 | Boarder | Mechanic | California |
| 26 | Melville Shackley | 25 | Boarder | Electric Paper | Connecticut |
| 27 | William H. Otterbach | 62 | Head | Superintendent | Pennsylvania |
| 28 | Katherine Otterbach | 50 | Wife | None | Pennsylvania |
| 29 | Katherine Otterbach | 24 | Daughter | Stenographer | Pennsylvania |
| 30 | Mary A. Binder | 48 | Lodger | Bookkeeper | Pennsylvania |
| 31 | Norman Binder | 21 | Lodger | Machinist | Pennsylvania |
| 32 | Arthur G. Middle | 52 | Head | Barber | Pennsylvania |
| 33 | Jessie S. Middle | 52 | Wife | None | Pennsylvania |
| 34 | Gladys Middle | 17 | Daughter | Proof Clerk | Pennsylvania |
| 35 | Martha Kuehn | 25 | Lodger | Clerk | Pennsylvania |
| 36 | Anna Mullin | 32 | Lodger | Book Binder | Pennsylvania |
| 37 | Ida M. Apaley | 47 | Lodger | Trainman | Delaware |
| 38 | James F. Gray | 40 | Head | Salesman | Pennsylvania |
| 39 | Mary Gray | 36 | Wife | None | Pennsylvania |
| 40 | Joseph R. Gray | 14 | Son | None | Pennsylvania |
| 41 | Richard T. Gray | 12 | Son | None | Pennsylvania |
| 42 | Mildred Gray | 10 | Daughter | None | Pennsylvania |
| 43 | Eleanor Gray | 8 | Daughter | None | Pennsylvania |
| 44 | Harry Gray | 5 | Son | None | Pennsylvania |
| 45 | Marjorie Gray | 3 | Daughter | None | Pennsylvania |
| 46 | Andrew J. Haeger | 37 | Head | Salesmanager | Pennsylvania |
| 47 | Anna Haeger | 34 | Wife | None | Pennsylvania |
| 48 | Catherine M. Haeger | 7 | Daughter | None | Pennsylvania |
| 49 | Andrew J. Jr. Haeger | 5 | Son | None | Pennsylvania |
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)