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William Knapp — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this William Knapp across the 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1904), then head of a 8-person household.
Age 16
b. ~1904
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Knapp |
| Given Name | William Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | Apprentice |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Apprentice |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1904 |
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.
8 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Knapp | Daughter | — | 21 | ~1899 |
| John Knapp | Son | — | 14 | ~1906 |
| James Knapp | Son | — | 7 | ~1913 |
| William Knapp | Son | — | 16 | ~1904 |
| William Knapp | Head | — | 46 | ~1874 |
| Charles Knapp | Son | — | 11 | ~1909 |
| Frances Knapp | Spouse | — | 42 | ~1878 |
| Gertrude Knapp | Daughter | — | 18 | ~1902 |
Census Appearances
1910
Philadelphia, Pennsylvania
Son, age 6
Philadelphia, Pennsylvania · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | Wm H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Son, age 16
Philadelphia, Pennsylvania · implied b. ~1904 — 8 household members
| Surname | Knapp |
| Given Name | William Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Occupation | Apprentice |
| Industry | Machine Shop |
| 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 William Knapp across 2 US Census years (1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
William Knapp
Son · 1920 · age 16 · b. ~1904 · Pennsylvania
★ You are viewing this record
Sibling
John Knapp
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Knapp
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Knapp
Sibling · 1920 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Knapp
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Knapp
Sibling · 1920 · age 21
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:1920:14thcensusofpopu1644unit:0813)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Robert D Lodge | 31 | Son | Clerk | Pennsylvania |
| 52 | Marion H Lodge | 28 | Daughter | Clerk | Pennsylvania |
| 53 | Paul Marshall | 29 | Head | Motorman | Pennsylvania |
| 54 | Anna M Marshall | 41 | Wife | — | Pennsylvania |
| 55 | Warrington H Marshall | 9 | Son | — | Pennsylvania |
| 56 | Eva Gartling | 70 | Mother in Law | — | Germany |
| 57 | Harry Seibert | 43 | Brother in Law | Packer | Pennsylvania |
| 58 | W. C. Felton | 60 | Head | Superintendent | Pennsylvania |
| 59 | Christiana Felton | 49 | Wife | — | Pennsylvania |
| 60 | W. C. Jr Felton | 35 | Son | Drayman | Pennsylvania |
| 61 | Raymond C Felton | 25 | Son | Helper | Pennsylvania |
| 62 | Martin Milberger | 47 | Brother in Law | Brickmaker | Pennsylvania |
| 63 | John Elder | 43 | Head | Accountant | Pennsylvania |
| 64 | Emma Elder | 41 | Wife | — | Pennsylvania |
| 65 | Robert H Elder | 9 | Son | — | Pennsylvania |
| 66 | Mabel Kaufman | 38 | Sister in Law | Dressmaker | Pennsylvania |
| 67 | Mary Kaufman | 71 | Mother in Law | — | Germany |
| 68 | Emma Brady | 53 | Head | — | Pennsylvania |
| 69 | Eleanor E Brady | 33 | Son | Accountant | New York |
| 70 | Jones Michael | 56 | Head | Salesman | Pennsylvania |
| 71 | Nellie Michael | 57 | Wife | — | Ireland |
| 72 | Grace Michael | 14 | Daughter | — | Pennsylvania |
| 73 | Albert Fiedler | 51 | Head | Salesman | Pennsylvania |
| 74 | Laura Fiedler | 44 | Wife | — | Pennsylvania |
| 75 | William S Fiedler | 39 | Head | Clerk | Pennsylvania |
| 76 | Mary Fiedler | 38 | Wife | — | Pennsylvania |
| 77 | William Fiedler | 14 | Son | — | Pennsylvania |
| 78 | Dorothy Fiedler | 12 | Daughter | — | Pennsylvania |
| 79 | Geo W Cook | 47 | Head | Salesman | Pennsylvania |
| 80 | Emma Cook | 46 | Wife | — | Pennsylvania |
| 81 | Roy Cook | 15 | Son | — | Pennsylvania |
| 82 | Elmer Cook | 13 | Son | — | Pennsylvania |
| 83 | William Knapp | 46 | Head | Machinist | Pennsylvania |
| 84 | Frances Knapp | 42 | Wife | — | England |
| 85 | Elizabeth Knapp | 21 | Daughter | Stenographer | Pennsylvania |
| 86 | Gertrude Knapp | 18 | Daughter | — | Pennsylvania |
| 87 | William Jr Knapp THIS PERSON | 16 | Son | Apprentice | Pennsylvania |
| 88 | John Knapp | 14 | Son | — | Pennsylvania |
| 89 | Charles Knapp | 11 | Son | — | Pennsylvania |
| 90 | James Knapp | 7 | Son | — | Pennsylvania |
| 91 | Joseph L Sleigh | 67 | Head | Teamster | Pennsylvania |
| 92 | Margaret Sleigh | 62 | Wife | — | Pennsylvania |
| 93 | Janet J Sleigh | 38 | Daughter | Saleswoman | Pennsylvania |
| 94 | Helen Sleigh | 35 | Daughter | Clerk | Pennsylvania |
| 95 | James H Huffman | 62 | Head | Bookkeeper | Pennsylvania |
| 96 | Helena Huffman | 58 | Wife | — | Pennsylvania |
| 97 | Grace Huffman | 36 | Daughter | Operator | Pennsylvania |
| 98 | Sarah L Hamilton | 67 | Head | — | Pennsylvania |
| 99 | Howard W Hamilton | 34 | Son | Salesman | Pennsylvania |
| 100 | Geo M Duncan | 41 | Head | Salesman | Pennsylvania |
Related Census Records
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)