MK
Mary Knapp — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Schuyler, Illinois
Our Model Tree links this Mary Knapp across the 1910 and 1920 US Censuses in Schuyler, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1902), then head of a 6-person household.
Age 18
b. ~1902
Female
Daughter
Born: Illinois
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Schuyler, Illinois |
| Surname | Knapp |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rushville City |
| Est. Birth Year | ~1902 |
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.
6 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Howard Knapp | Son | — | 23 | ~1897 |
| Edward Knapp | Son | — | 16 | ~1904 |
| Mary Knapp | Daughter | — | 18 | ~1902 |
| James Knapp | Head | — | 55 | ~1865 |
| Maud Knapp | Spouse | — | 50 | ~1870 |
| Harold Knapp | Son | — | 20 | ~1900 |
Census Appearances
1910
Schuyler, Illinois
Daughter, age 8
Schuyler, Illinois · implied b. ~1902 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Schuyler, Illinois
Daughter, age 18
Schuyler, Illinois · implied b. ~1902 — 6 household members
| Surname | Knapp |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Knapp across 2 US Census years (1910 and 1920) in Schuyler, Illinois, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Knapp
Daughter · 1920 · age 18 · b. ~1902 · Illinois
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Sibling
Edward Knapp
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Knapp
Sibling · 1920 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Knapp
Sibling · 1920 · age 23
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 — Schuyler, Illinois
Open full size
1920 US Federal Census — Schuyler, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu408unit:0119)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | J. Ray Bogue | 33 | Head | Merchant | Illinois |
| 52 | Etta M. Bogue | 32 | Wife | — | Illinois |
| 53 | Emma G. Goodwin | 50 | Head | Sales Lady | Illinois |
| 54 | Belle Meade | 67 | Boarder | Seamstress | Illinois |
| 55 | Ada Pierce | 54 | Head | Photographer | Illinois |
| 56 | Clarke Pierce | 16 | Son | — | Illinois |
| 57 | Jerome Hentner | 76 | Mother | — | Ohio |
| 58 | Thomas J. Taylor | 67 | Head | Manufacturer | Illinois |
| 59 | Alice H. Taylor | 60 | Wife | — | Illinois |
| 60 | James V. Knapp | 55 | Head | Merchant | Illinois |
| 61 | Maud Knapp | 50 | Wife | — | Illinois |
| 62 | Howard Knapp | 23 | Son | Optometrist | Illinois |
| 63 | Harold Knapp | 20 | Son | — | Illinois |
| 64 | Mary Knapp THIS PERSON | 18 | Daughter | — | Illinois |
| 65 | Edward Knapp | 16 | Son | — | Illinois |
| 66 | Frederick Foster | 51 | Head | Physician | Illinois |
| 67 | Carrie B. Foster | 46 | Wife | — | Illinois |
| 68 | Mary P. Foster | 21 | Daughter | Teacher | Illinois |
| 69 | Henry G. Foster | 20 | Son | — | Illinois |
| 70 | Sarah B. Foster | 18 | Daughter | — | Illinois |
| 71 | Florence E. Foster | 16 | Daughter | — | Illinois |
| 72 | Frances B. Foster | 15 | Daughter | — | Illinois |
| 73 | Reva F. Foster | 13 | Daughter | — | Illinois |
| 74 | Arthur R. Foster | 9 | Daughter | — | Illinois |
| 75 | Henrietta M. Foster | 7 | Daughter | — | Illinois |
| 76 | Frederick Foster | 5 | Son | — | Illinois |
| 77 | Mary A. Beader | 83 | Head | — | Pennsylvania |
| 78 | Harry Beader | 51 | Son | Laborer | Illinois |
| 79 | Wm. G. Patterson | 68 | Head | Baker | Illinois |
| 80 | Robert Stoner | 57 | Head | Merchant | Illinois |
| 81 | Ada Stoner | 54 | Wife | Merchant | Illinois |
| 82 | John S. Little | 55 | Head | Cashier | Illinois |
| 83 | Grace Little | 58 | Sister | — | Illinois |
| 84 | Virginia C. Little | 57 | Sister | — | Illinois |
| 85 | Adras W. Doall | 58 | Head | Physician | Illinois |
| 86 | Dorothy M. Doall | 37 | Wife | — | Illinois |
| 87 | John M. Doall | 21 | Son | — | Illinois |
| 88 | Hazel M. Galeson | 17 | Step Daughter | — | Illinois |
| 89 | Julia M. Greenleaf | 45 | Head | Milliner | Illinois |
| 90 | Isanda Harrison | 70 | Roomer | Dressmaker | Illinois |
| 91 | Jesse E. Matheney | 45 | Head | Bookkeeper | Mississippi |
| 92 | Minnie M. Matheney | 45 | Wife | — | Illinois |
| 93 | Wm. H. Schuyler | 31 | Head | Tailor | Illinois |
| 94 | Nellie C. Schuyler | 25 | Wife | — | Illinois |
| 95 | Beatrice Schuyler | 4 | Daughter | — | Illinois |
| 96 | Marian Schuyler | 2 | Daughter | — | Illinois |
| 97 | Norma Schuyler | 0 | Daughter | — | Illinois |
| 98 | Harry C. Maxwell | 32 | Head | Bookkeeper | Illinois |
| 99 | Lillian Maxwell | 28 | Wife | — | Illinois |
| 100 | Dorothy Maxwell | 7 | Daughter | — | Illinois |
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)