MK
Mary Knox — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Washington, Pennsylvania
Our Model Tree links this Mary Knox across the 1910 and 1920 US Censuses in Washington, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1901), then head of a 7-person household.
Age 19
b. ~1901
Female
Daughter
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Washington, Pennsylvania |
| Surname | Knox |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Ellsworth Borough |
| Est. Birth Year | ~1901 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Earl Knox | Son | — | 14 | ~1906 |
| Frank Knox | Head | — | 49 | ~1871 |
| Robert Knox | Son | — | 4 | ~1916 |
| Frances Knox | Spouse | — | 41 | ~1879 |
| Mary Knox | Daughter | — | 19 | ~1901 |
| Frank Knox | Son | — | 17 | ~1903 |
| Clyde Knox | Son | — | 11 | ~1909 |
Census Appearances
1910
Washington, Pennsylvania
Daughter, age 9
Washington, Pennsylvania · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knox |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Washington, Pennsylvania
Daughter, age 19
Washington, Pennsylvania · implied b. ~1901 — 7 household members
| Surname | Knox |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| 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 Knox across 2 US Census years (1910 and 1920) in Washington, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Knox
Daughter · 1920 · age 19 · b. ~1901 · Pennsylvania
★ You are viewing this record
Sibling
Frank Knox
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Knox
Sibling · 1920 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Knox
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clyde Knox
Sibling · 1920 · age 11
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 — Washington, Pennsylvania
Open full size
1920 US Federal Census — Washington, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1660unit:1071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John W. Hedge | 11 | Son | None | Pennsylvania |
| 2 | Jennie E. Hedge | 64 | Aunt | None | Pennsylvania |
| 3 | Marion A. Liggett | 59 | Head | Dealer | Pennsylvania |
| 4 | Alice B. Liggett | 57 | Wife | None | Pennsylvania |
| 5 | Chapman Mary G. Liggett | 29 | Daughter | None | Pennsylvania |
| 6 | James L. Liggett | 4 | Grandson | None | New Mexico |
| 7 | Frank L. Knox | 49 | Head | Physician | Pennsylvania |
| 8 | Frances R. Knox | 41 | Wife | None | Pennsylvania |
| 9 | Mary E. Knox THIS PERSON | 19 | Daughter | None | Pennsylvania |
| 10 | Frank L. Knox | 17 | Son | None | Pennsylvania |
| 11 | Earl R. Knox | 14 | Son | None | Pennsylvania |
| 12 | Clyde W. Knox | 11 | Son | None | Pennsylvania |
| 13 | Robert W. Knox | 4 | Son | None | Pennsylvania |
| 14 | Michael L. Hillenbrand | 55 | Head | Salesman | Pennsylvania |
| 15 | Rosanna Hillenbrand | 47 | Wife | None | Ireland |
| 16 | Charles A. Huston | 44 | Head | Superintendent | Ohio |
| 17 | Myrtle G. Huston | 33 | Wife | None | Pennsylvania |
| 18 | Dorothy F. Huston | 14 | Daughter | None | Pennsylvania |
| 19 | Donald R. Huston | 12 | Son | None | Pennsylvania |
| 20 | Kathryn F. Huston | 5 | Daughter | None | Pennsylvania |
| 21 | Charles F. Huston | 3 | Son | None | Pennsylvania |
| 22 | Lynn C. Blayney | 54 | Head | Retail Merchant | Pennsylvania |
| 23 | Edith D. Blayney | 46 | Wife | None | Pennsylvania |
| 24 | Colmer R. Dawson | 44 | Head | Machinist | Pennsylvania |
| 25 | Etha M. Dawson | 29 | Wife | None | Pennsylvania |
| 26 | Blanche D. Dawson | 11 | Daughter | None | Pennsylvania |
| 27 | Robert A. Dawson | 8 | Son | None | Pennsylvania |
| 28 | Layton H. Dawson | 3 | Son | None | Pennsylvania |
| 29 | Harry C. Meldahl | 38 | Head | Letterer | Kentucky |
| 30 | Garnet S. Meldahl | 26 | Wife | None | Ohio |
| 31 | Albert F. Blayney | 64 | Head | None | Pennsylvania |
| 32 | Mary D. Blayney | 61 | Wife | None | New Jersey |
| 33 | Francis S. Blayney | 33 | Son | Salesman | Pennsylvania |
| 34 | Grace Blayney | 31 | Daughter | None | Pennsylvania |
| 35 | Blanche M. Blayney | 27 | Daughter | None | Pennsylvania |
| 36 | Francis J. Logan | 54 | Head | Retail Dealer | Pennsylvania |
| 37 | Julia F. Logan | 44 | Wife | None | Pennsylvania |
| 38 | Francis J. Logan | 17 | Son | Moulder | Pennsylvania |
| 39 | Margaret M. Logan | 15 | Daughter | None | Pennsylvania |
| 40 | Joseph W. Logan | 12 | Son | None | Pennsylvania |
| 41 | Madaline J. Logan | 11 | Daughter | None | Pennsylvania |
| 42 | Sylvester G. Logan | 9 | Son | None | Pennsylvania |
| 43 | Genevieve M. Logan | 5 | Daughter | None | Pennsylvania |
| 44 | Charles L. Logan | 2 | Son | None | Pennsylvania |
| 45 | Mary A. Logan | 81 | Mother | None | Ohio |
| 46 | Chester S. Miller | 47 | Head | Retail Merchant | Pennsylvania |
| 47 | Elizabeth A. Miller | 43 | Wife | None | Pennsylvania |
| 48 | Harold C. Miller | 18 | Son | Laborer | Pennsylvania |
| 49 | Grace F. Miller | 16 | Daughter | None | Pennsylvania |
| 50 | Mary J. Miller | 14 | Daughter | 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)