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Frederick Williams — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Washington, Maryland
Our Model Tree links this Frederick Williams across the 1930 and 1940 US Censuses in Washington, Maryland (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 9-person household.
Age 23
b. ~1907
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Washington, Maryland |
| Surname | Williams |
| Given Name | Frederick |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Farmer |
| Township / Ward | Election District 22 |
| 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 1930 census.
| Name | Relation to head | Relative to Frederick | Age | Birth yr |
|---|---|---|---|---|
| Frederick Williams | Son | — | 23 | ~1907 |
| Emma Williams | Spouse | — | 48 | ~1882 |
| Anna Williams | Daughter | — | 10 | ~1920 |
| Helen Williams | Daughter | — | 18 | ~1912 |
| Clarence Williams | Head | — | 51 | ~1879 |
| Richard Williams | Son | — | 28 | ~1902 |
| Albert Williams | Son | — | 25 | ~1905 |
| Mary Williams | Daughter | — | 15 | ~1915 |
| Bender Williams | Son | — | 13 | ~1917 |
Census Appearances
1930
Washington, Maryland
Son, age 23
Washington, Maryland · implied b. ~1907 — 9 household members
| Surname | Williams |
| Given Name | Frederick |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Farmer |
| Industry | General Farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Washington-County, Maryland
Son, age 33
Washington-County, Maryland · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Frederic E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Wash. |
| Occupation | Hoist operator |
| Industry | Cement Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 358 |
| Highest Grade | No 6 |
| 1935 Residence | Md. |
| 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 Frederick Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Frederick Williams
Son · 1930 · age 23 · b. ~1907 · Maryland
★ You are viewing this record
Sibling
Helen Williams
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Williams
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Williams
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Williams
Sibling · 1930 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bender Williams
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Williams
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 — Washington, Maryland
Open full size
1930 US Federal Census — Washington, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus881unit:0794)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Carlton Dehart | 13 | Son | — | Virginia |
| 52 | Victor Dehart | 11 | Son | — | Virginia |
| 53 | Marshall Dehart | 9 | Son | — | Virginia |
| 54 | Eugene Dehart | 7 | Son | — | Virginia |
| 55 | Delmar Dehart | 27 | Brother | Fireman | Virginia |
| 56 | Jacob L Frey | 63 | Head | Farmer | Maryland |
| 57 | Hulda Frey | 58 | Wife | — | Maryland |
| 58 | Ephriam Messinger | 68 | Lodger | Laborer | Maryland |
| 59 | Clarence Williams | 51 | Head | Farmer | Maryland |
| 60 | Emma Williams | 48 | Wife | — | Maryland |
| 61 | Richard Williams | 28 | Son | Laborer | Maryland |
| 62 | Albert Williams | 25 | Son | Mechanic | Maryland |
| 63 | Frederick Williams THIS PERSON | 23 | Son | Farmer | Maryland |
| 64 | Helen Williams | 18 | Daughter | — | Maryland |
| 65 | Mary Williams | 15 | Daughter | — | Maryland |
| 66 | Bender Williams | 13 | Son | — | Maryland |
| 67 | Anna Williams | 10 | Daughter | — | Maryland |
| 68 | Mary Rodgers | 62 | Head | Servant | Maryland |
| 69 | Truman Rodgers | 21 | Son | Cutter | Maryland |
| 70 | Henry Love | 45 | Head | Manager | England |
| 71 | Ada Love | 60 | Wife | — | England |
| 72 | Chas Grimm | 66 | Head | Laborer | Maryland |
| 73 | Margaret Grimm | 61 | Wife | — | Maryland |
| 74 | Charles Jr Grimm | 42 | Son | Laborer | Maryland |
| 75 | Martha Grimm | 34 | Daughter in law | — | Maryland |
| 76 | Bohn Crist Grimm | 38 | Son in law | Laborer | Maryland |
| 77 | Philip Noel | 37 | Head | Laborer | Maryland |
| 78 | Sherlie Noel | 34 | Wife | — | Maryland |
| 79 | Charles Noel | 14 | Son | — | Maryland |
| 80 | Pauline Noel | 4 | Daughter | — | Maryland |
| 81 | Edgar Traver | 35 | Head | Laborer | Pennsylvania |
| 82 | Ida Traver | 40 | Wife | — | Maryland |
| 83 | Etta Traver | 11 | Daughter | — | Maryland |
| 84 | Mary Traver | 9 | Daughter | — | Maryland |
| 85 | Joseph Bowman | 19 | Step Son | Cutter | Maryland |
| 86 | David H Horn | 58 | Head | Farmer | West Virginia |
| 87 | Emma Horn | 53 | Wife | — | Maryland |
| 88 | Ernest Horn | 22 | Son | Laborer | Pennsylvania |
| 89 | Nellie Horn | 21 | Daughter | Laborer | Pennsylvania |
| 90 | James Horn | 19 | Son | — | Maryland |
| 91 | Frances Horn | 17 | Daughter | — | Maryland |
| 92 | Charles Horn | 15 | Son | — | Maryland |
| 93 | Emma M Horn | 13 | Daughter | — | Maryland |
| 94 | Russell Zeigler | 34 | Head | Machinist | Pennsylvania |
| 95 | Francis Zeigler | 31 | Wife | — | Pennsylvania |
| 96 | Vincent Zeigler | 13 | Son | — | Maryland |
| 97 | Ruth Zeigler | 3 | Daughter | — | Maryland |
| 98 | Mary Hull | 54 | Head | — | Maryland |
| 99 | Gertie Zeigler | 45 | Sister | — | Maryland |
| 100 | Henry Plummer | 78 | Head | Farmer | Maryland |
Related Census Records
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)