WF
William Frederick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Columbiana-County, Ohio
Our Model Tree links this William Frederick across the 1930 and 1940 US Censuses in Columbiana-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Columbiana-County, Ohio |
| Surname | Frederick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | E. Liverpool |
| 1935 Residence (County) | Columbiana |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | E Liverpool |
| Est. Birth Year | ~1925 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Robert Frederick | Son | — | 16 | ~1924 |
| Will Frederick | Son | — | 10 | ~1930 |
| Thomas Frederick | Son | — | 8 | ~1932 |
| William Frederick | Son | — | 15 | ~1925 |
| Alice Frederick | Daughter | — | 17 | ~1923 |
| Elsie Frederick | Spouse | — | 40 | ~1900 |
| Carolyn Frederick | Daughter | — | 5 | ~1935 |
| Robert Frederick | Head | — | 44 | ~1896 |
| Clifford Frederick | Son | — | 13 | ~1927 |
Census Appearances
1930
Mahoning, Ohio
Son, age 5
Mahoning, Ohio · implied b. ~1925 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frederik |
| Given Name | Willie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Columbiana-County, Ohio
Son, age 15
Columbiana-County, Ohio · implied b. ~1925 — 9 household members
| Surname | Frederick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | E. Liverpool |
| 1935 Residence (County) | Columbiana |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| 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 Frederick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Frederick
Son · 1940 · age 15 · b. ~1925 · Ohio
★ You are viewing this record
Sibling
Will Frederick
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Frederick
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Frederick
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Frederick
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carolyn Frederick
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clifford Frederick
Sibling · 1940 · age 13
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
1940 US Federal Census — Columbiana-County, Ohio
Open full size
1940 US Federal Census — Columbiana-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03043-00552)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles M. Rigby | 46 | Head | Jiggerman | Ohio |
| 42 | Ethel Rigby | 45 | Wife | — | West Virginia |
| 43 | Josephine Rigby | 16 | Daughter | — | Ohio |
| 44 | Geraldine Rigby | 14 | Daughter | — | Ohio |
| 45 | Matilda Chambers | 67 | Mother-in-law | Manager | West Virginia |
| 46 | Sadie Kovach | 51 | Head | — | Pennsylvania |
| 47 | Anna Gale Kovach | 22 | Daughter | — | Ohio |
| 48 | Elizabeth Kovach | 16 | Daughter | — | Ohio |
| 49 | Ethel Kovach | 60 | Sister | Decorator | Ohio |
| 50 | Elizabeth Wolfe | 64 | Head | — | Pennsylvania |
| 51 | Thomas Wolfe | 74 | Head | — | Pennsylvania |
| 52 | Rachel Wolfe | 76 | Wife | — | Ohio |
| 53 | Mary Ketchum | 45 | Daughter | Stenographer | West Virginia |
| 54 | Rachel Ketchum | 17 | Granddaughter | — | Ohio |
| 55 | Robert Frederick | 44 | Head | Machinist | Ohio |
| 56 | Elsie D. Frederick | 40 | Wife | — | Ohio |
| 57 | Alice M. Frederick | 17 | Daughter | — | Ohio |
| 58 | Robert Frederick | 16 | Son | — | Ohio |
| 59 | William Frederick THIS PERSON | 15 | Son | — | Ohio |
| 60 | Clifford Frederick | 13 | Son | — | Ohio |
| 61 | Will Frederick | 10 | Son | — | Ohio |
| 62 | Thomas Frederick | 8 | Son | — | Ohio |
| 63 | Carolyn Frederick | 5 | Daughter | — | Ohio |
| 64 | Harvey S. Burdick | 52 | Head | Machinist | Kansas |
| 65 | Stella Burdick | 53 | Wife | — | Ohio |
| 66 | Curt Burdick | 22 | Son | — | Ohio |
| 67 | Emory Spence | 70 | Head | — | Ohio |
| 68 | Helen D. Spence | 55 | Sister | Laborer | Ohio |
| 69 | Ray Buram | 61 | Head | Auto Salesman | Ohio |
| 70 | Maude D. Buram | 54 | Wife | — | Ohio |
| 71 | Ray Jr. Buram | 16 | Son | — | Ohio |
| 72 | Robert Buram | 5 | Son | — | Ohio |
| 73 | Charlotte Earl | 21 | Daughter | — | Ohio |
| 74 | Earl Earl | 26 | Son-in-law | Clerk | Ohio |
| 75 | Carolyn Earl | 2 | Daughter-in-law | — | Ohio |
| 76 | Margaret Williams | 76 | Lodger | — | Pennsylvania |
| 77 | Edward Q. Walger | 48 | Head | Clerk | West Virginia |
| 78 | Mabel Walger | 43 | Wife | Teacher | Ohio |
| 79 | Lee Laughlin | 35 | Head | Recorder | Ohio |
| 80 | Elizabeth Laughlin | 33 | Wife | Decorator | Ohio |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)