WF
William Frederick — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Carroll, Maryland
Our Model Tree links this William Frederick across the 1920 and 1930 US Censuses in Carroll, Maryland (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 10-person household.
Age 13
b. ~1917
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Carroll, Maryland |
| Surname | Frederick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Freedom District |
| Est. Birth Year | ~1917 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Charles Frederick | Head | — | 36 | ~1894 |
| Robert Blizzard | Other | — | 26 | ~1904 |
| Harvey Frederick | Son | — | 10 | ~1920 |
| Charles Frederick | Son | — | 6 | ~1924 |
| William Frederick | Son | — | 13 | ~1917 |
| Emma Blizzard | Other | — | 52 | ~1878 |
| Francis Frederick | Son | — | 11 | ~1919 |
| Albert Frederick | Son | — | 7 | ~1923 |
| Stella Frederick | Other | — | 35 | ~1895 |
| George Blizzard | Other | — | 62 | ~1868 |
Census Appearances
1920
Carroll, Maryland
Son, age 3
Carroll, Maryland · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frederick |
| Given Name | William T |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Carroll, Maryland
Son, age 13
Carroll, Maryland · implied b. ~1917 — 10 household members
| Surname | Frederick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 (1920 and 1930) in Carroll, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
William Frederick
Son · 1930 · age 13 · b. ~1917 · Maryland
★ You are viewing this record
Sibling
Charles Frederick
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Frederick
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Frederick
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harvey Frederick
Sibling · 1930 · age 10
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 — Carroll, Maryland
Open full size
1930 US Federal Census — Carroll, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus872unit:0231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Frederick | 36 | Head | Plumber | Maryland |
| 2 | Stella Frederick | 35 | Wife-H | — | Maryland |
| 3 | William Frederick THIS PERSON | 13 | Son | — | Maryland |
| 4 | Francis Frederick | 11 | Son | — | Maryland |
| 5 | Harvey Frederick | 10 | Son | — | Maryland |
| 6 | Albert Frederick | 7 | Son | — | Maryland |
| 7 | Charles Frederick | 6 | Son | — | Maryland |
| 8 | George U. Blizzard | 62 | O | Farmer | Pennsylvania |
| 9 | Emma Blizzard | 52 | — | — | Maryland |
| 10 | Robert S. Blizzard | 26 | — | Farmer | Maryland |
| 11 | Catharine Miller | 77 | Head-H | Operator | Germany |
| 12 | Magin Catharine Miller | 54 | — | — | Maryland |
| 13 | Charles Miller | 52 | — | Laborer | Maryland |
| 14 | Harry W. Etzler | 35 | Head | Farmer | Maryland |
| 15 | Catharine Etzler | 31 | — | — | Maryland |
| 16 | Harry W. Jr. Etzler | 10 | — | — | Maryland |
| 17 | George E. Etzler | 9 | — | — | Maryland |
| 18 | J. Robert Randall | 44 | Head | Proprietor | Maryland |
| 19 | Kathleen Randall | 37 | — | Proprietress | Maryland |
| 20 | Dorothy E. Randall | 18 | — | — | Maryland |
| 21 | Maynard Randall | 15 | — | — | Maryland |
| 22 | J. Robert Randall | 7 | — | — | Maryland |
| 23 | L. Harry Besard | 63 | Head | Farmer | Maryland |
| 24 | Grace Besard | 57 | — | — | Maryland |
| 25 | Caroline Stockdale | 75 | — | — | Maryland |
| 26 | Wakeman Besard | 32 | Head | Farmer | Maryland |
| 27 | Emily E. Besard | 26 | — | — | Maryland |
| 28 | Ira J. S. Besard | 4 | — | — | Maryland |
| 29 | George A. Drechsler | 22 | Head | Farm Laborer | Maryland |
| 30 | Myrtle Drechsler | 22 | — | — | Maryland |
| 31 | William T. Gibson | 57 | Head | Farmer | Maryland |
| 32 | Nellie Gibson | 57 | — | — | Maryland |
| 33 | Victoria C. Gibson | 73 | — | — | Virginia |
| 34 | Lena C. Myers | 65 | — | — | Maryland |
| 35 | Allen Herman | 7 | — | — | Maryland |
| 36 | Benton Conwin | 47 | Head | Farmer | Maryland |
| 37 | Hannah Conwin | 42 | — | — | Maryland |
| 38 | Columbus Jenkins | 51 | Head | Huckster | Maryland |
| 39 | Gertrude R. Jenkins | 51 | — | — | Maryland |
| 40 | Samuel Solomon | 40 | Head | Farmer | New York |
| 41 | Rose Solomon | 37 | — | — | New York |
| 42 | Lillian Solomon | 14 | — | — | New York |
| 43 | Pearl Solomon | 11 | — | — | New York |
| 44 | Milton Solomon | 9 | — | — | New York |
| 45 | Albert Solomon | 2 | — | — | New York |
| 46 | Harris Tirkeltant | 68 | — | — | Russia |
| 47 | Harry J. Myers | 32 | Head | Farmer | Maryland |
| 48 | Elizabeth Myers | 28 | — | — | Maryland |
| 49 | Eleanor Myers | 4 | — | — | Maryland |
| 50 | Thomas A. Jones | 43 | Head | Farmer | Maryland |
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)