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William Knapp — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Camden, New Jersey
Our Model Tree links this William Knapp across the 1910 and 1920 US Censuses in Camden, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 9-person household.
Age 13
b. ~1907
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Camden, New Jersey |
| Surname | Knapp |
| Given Name | William Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Waterford Township |
| Est. Birth Year | ~1907 |
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.
9 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Agnes Knapp | Daughter | — | 1 | ~1919 |
| James Knapp | Son | — | 11 | ~1909 |
| William Knapp | Son | — | 13 | ~1907 |
| Margaret Knapp | Daughter | — | 10 | ~1910 |
| Catherine Knapp | Daughter | — | 14 | ~1906 |
| William Knapp | Head | — | 40 | ~1880 |
| Mary Knapp | Spouse | — | 40 | ~1880 |
| Robert Knapp | Son | — | 6 | ~1914 |
| Elizabeth Knapp | Daughter | — | 16 | ~1904 |
Census Appearances
1910
Camden, New …
Son, age 3
Camden, New Jersey · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | William F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Camden, New …
Son, age 13
Camden, New Jersey · implied b. ~1907 — 9 household members
| Surname | Knapp |
| Given Name | William Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Pennsylvania |
| 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 William Knapp across 2 US Census years (1910 and 1920) in Camden, New Jersey, using XGBoost record linkage.
Show:
This person
Anchor record
William Knapp
Son · 1920 · age 13 · b. ~1907 · New Jersey
★ You are viewing this record
Sibling
Elizabeth Knapp
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Knapp
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Knapp
Sibling · 1920 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Knapp
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Knapp
Sibling · 1920 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Knapp
Sibling · 1920 · age 14
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 — Camden, New Jersey
Open full size
1920 US Federal Census — Camden, New Jersey
Page Contents
48 people indexed on this census page (ia:1920:14thcensusofpopu1025unit:0504)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William Knapp | 40 | Head | Farmer | New Jersey |
| 52 | Mary E Knapp | 40 | Wife | — | Pennsylvania |
| 53 | Elizabeth Knapp | 16 | Daughter | Operator | Pennsylvania |
| 54 | Catherine Knapp | 14 | Daughter | — | Pennsylvania |
| 55 | William Jr Knapp THIS PERSON | 13 | Son | — | Pennsylvania |
| 56 | James Knapp | 11 | Son | — | Pennsylvania |
| 57 | Margaret Knapp | 10 | Daughter | — | New Jersey |
| 58 | Robert Knapp | 6 | Son | — | Pennsylvania |
| 59 | Agnes M Knapp | 1 | Daughter | — | New Jersey |
| 60 | Samuel Hough | 62 | Head | Machinist | Pennsylvania |
| 61 | Anna Hough | 40 | Wife | — | Pennsylvania |
| 62 | A Clayton Hough | 20 | Son | Mechanic | Pennsylvania |
| 63 | Norman S Hough | 8 | Son | — | Pennsylvania |
| 64 | Karl Fuchs | 46 | Head | Farmer | Germany |
| 65 | Ida Fuchs | 42 | Wife | — | New York |
| 66 | Joe Fuchs | 18 | Son | Laborer | New Jersey |
| 67 | Edith Fuchs | 14 | Daughter | — | New Jersey |
| 68 | Ruth Fuchs | 12 | Daughter | — | New Jersey |
| 69 | William Fuchs | 8 | Son | — | New Jersey |
| 70 | Albert Hall | 51 | Head | Grocer | Maine |
| 71 | Sarah Hall | 52 | Wife | — | Pennsylvania |
| 72 | Alice M Hall | 20 | Daughter | Mechanic | New Jersey |
| 73 | Ann F Hall | 83 | Mother | — | Maine |
| 74 | George W Worrell | 48 | Head | Car Inspector | Pennsylvania |
| 75 | Mary A Worrell | 48 | Wife | — | Maryland |
| 76 | Julia E Worrell | 18 | Daughter | — | Pennsylvania |
| 77 | George Worrell | 16 | Son | — | Pennsylvania |
| 78 | Mary Worrell | 13 | Daughter | — | Pennsylvania |
| 79 | William H Worrell | 8 | Son | — | New Jersey |
| 80 | Edward Shomaker | 53 | Head | Farmer | New Jersey |
| 81 | Martha Shomaker | 49 | Wife | — | New Jersey |
| 82 | Edward Shomaker | 7 | Son | — | New Jersey |
| 83 | Andrew Loeffler | 62 | Head | Mechanical Engineer | Germany |
| 84 | Freda Loeffler | 50 | Wife | — | Germany |
| 85 | Harry Loeffler | 27 | Son | Brakeman | Pennsylvania |
| 86 | Bertha Loeffler | 22 | Daughter | Car Cleaner | Pennsylvania |
| 87 | John Loeffler | 19 | Son | — | New Jersey |
| 88 | Charles Loeffler | 16 | Son | — | New Jersey |
| 89 | Frederick Loeffler | 13 | Son | — | New Jersey |
| 90 | Susan F Loeffler | 9 | Daughter | — | New Jersey |
| 91 | William Loeffler | 5 | Son | — | New Jersey |
| 92 | John Macneil | 68 | Head | Laborer | Scotland |
| 93 | Gaspare Leto | 61 | Head | Farmer | Italy |
| 94 | Rosa Leto | 59 | Wife | — | Italy |
| 95 | Grace Leto | 23 | Daughter | — | Italy |
| 96 | Frank Leto | 21 | Son | Laborer | Italy |
| 97 | Josephine Leto | 22 | Daughter-in-law | — | Italy |
| 98 | Annie Leto | 0 | Daughter | — | New Jersey |
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)