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William Knapp — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Lucas, Ohio
Our Model Tree links this William Knapp across the 1920 and 1930 US Censuses in Lucas, Ohio (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 6-person household.
Age 16
b. ~1914
Male
Son
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lucas, Ohio |
| Surname | Knapp |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Sylvania Township |
| Est. Birth Year | ~1914 |
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 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Florence Knapp | Daughter | — | 12 | ~1918 |
| Jeanette Knapp | Daughter | — | 18 | ~1912 |
| William Knapp | Son | — | 16 | ~1914 |
| Helen Knapp | Spouse | — | 38 | ~1892 |
| Frank Knapp | Head | — | 47 | ~1883 |
| Norton Knapp | Son | — | 20 | ~1910 |
Census Appearances
1920
Lucas, Ohio
Son, age 5
Lucas, Ohio · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | William R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Lucas, Ohio
Son, age 16
Lucas, Ohio · implied b. ~1914 — 6 household members
| Surname | Knapp |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 (1920 and 1930) in Lucas, Ohio, using XGBoost record linkage.
Show:
This person
Anchor record
William Knapp
Son · 1930 · age 16 · b. ~1914 · Ohio
★ You are viewing this record
Sibling
Jeanette Knapp
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Knapp
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norton Knapp
Sibling · 1930 · age 20
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
1930 US Federal Census — Lucas, Ohio
Open full size
1930 US Federal Census — Lucas, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1832:1096)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Myron Bonawitt | 42 | Head | Driller | Ohio |
| 2 | Fern Bonawitt | 32 | Wife | — | Ohio |
| 3 | Elmer Keck | 65 | Head | — | Ohio |
| 4 | Kate Keck | 58 | Wife | — | Ohio |
| 5 | Raymond Peterson | 22 | Head | Laborer | Pennsylvania |
| 6 | Frances Peterson | 20 | Wife | — | Kentucky |
| 7 | Frank R Knapp | 47 | Head | Proprietor | Ohio |
| 8 | Helen Knapp | 38 | Wife | — | Ohio |
| 9 | Norton B Knapp | 20 | Son | Truck Driver | Ohio |
| 10 | Jeanette Knapp | 18 | Daughter | — | Ohio |
| 11 | William Knapp THIS PERSON | 16 | Son | — | Ohio |
| 12 | Florence Knapp | 12 | Daughter | — | Ohio |
| 13 | John Joseph | 45 | Head | Laborer | Hungary |
| 14 | Margaret Joseph | 37 | Wife | — | Hungary |
| 15 | John Jr Joseph | 15 | Son | — | Michigan |
| 16 | Carl F Joseph | 13 | Son | — | Michigan |
| 17 | Margaret M Joseph | 11 | Daughter | — | Pennsylvania |
| 18 | Mary J Joseph | 4 | Daughter | — | Pennsylvania |
| 19 | Louis French | 24 | Head | Farmer | Ohio |
| 20 | Isabelle French | 18 | Wife | — | Ohio |
| 21 | Edwin Bell | 35 | Head | Glass Cutter | Michigan |
| 22 | Anna Bell | 27 | Wife | — | Germany |
| 23 | George E Bell | 9 | Son | — | Ohio |
| 24 | Milton Bell | 5 | Son | — | Ohio |
| 25 | Bert W Miller | 63 | Step-father | Salesman | Michigan |
| 26 | Edna Miller | 52 | Mother | Fitter | Michigan |
| 27 | Russell Knapp | 50 | Head | Contractor | Ohio |
| 28 | Maggie Knapp | 39 | Wife | — | United States |
| 29 | Dorothy Knapp | 7 | Daughter | — | Ohio |
| 30 | Adolph Van Brandt | 51 | Head | Farmer | Belgium |
| 31 | Eliza Van Brandt | 42 | Wife | — | Belgium |
| 32 | Morris Van Brandt | 16 | Son | Laborer | Michigan |
| 33 | Victor Van Brandt | 14 | Son | — | Michigan |
| 34 | Marcella Van Brandt | 11 | Daughter | — | Michigan |
| 35 | Tom Earle | 48 | Head | Farmer | New York |
| 36 | Emma Earle | 43 | Wife | — | Ohio |
| 37 | Fred Earle | 21 | Son | Grinder | Ohio |
| 38 | Richard M French | 64 | Head | Section Hand | Michigan |
| 39 | Stella D French | 61 | Wife | — | Michigan |
| 40 | Blanche French | 33 | Son | Laborer | Michigan |
| 41 | Anna Collins | 31 | Daughter | Clerk | Michigan |
| 42 | Clarence French | 20 | Son | — | Ohio |
| 43 | Doris Dusseau | 13 | Granddaughter | — | Ohio |
| 44 | William Collins | 10 | Grandson | — | Ohio |
| 45 | Galen Benham | 51 | Head | Truck Driver | Ohio |
| 46 | Florence Benham | 44 | Wife | — | Ohio |
| 47 | Josephine Wilgus | 42 | Head | — | Ohio |
| 48 | Samuel J Dunn | 60 | Head | — | Ohio |
| 49 | Catherine Smith | 67 | Head | — | Ohio |
| 50 | Frank Smith | 37 | Son | Watchman | Ohio |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)