WC
William Clarke — 1930 US Census Record
Linked across censuses1930 United States Federal Census · None, District of Columbia
Our Model Tree links this William Clarke across the 1920, 1930 and 1940 US Censuses in District of Columbia (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 7-person household.
Age 45
b. ~1885
Male
Head
Born: District of Columbia
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | None, District of Columbia |
| Surname | Clarke |
| Given Name | William L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | District of Columbia |
| Age at First Marriage | 33 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Clerk |
| Industry | U.S. Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12.00 |
| Birth State | District of Columbia |
| Birth Country | United States |
| Birthplace (normalized) | district of columbia |
| Occupation | Clerk |
| Township / Ward | Washington |
| Est. Birth Year | ~1885 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Clarke | Son | — | 9 | ~1921 |
| James Johnson | Other | — | 73 | ~1857 |
| William Clarke | Head | — | 45 | ~1885 |
| Lottie Clarke | Daughter | — | 6 | ~1924 |
| Edward Hayes | Other | — | 20 | ~1910 |
| Lottie Clarke | Spouse | — | 43 | ~1887 |
| Roland Clarke | Son | — | 1 | ~1929 |
Census Appearances
1920
X, District …
Head, age 35
X, District of Columbia · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | William M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | District of Columbia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Maryland |
| Occupation | Mail carrier |
| Industry | U.S. Postal Service |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | District of Columbia |
| Birth Country | United States |
| Birthplace (normalized) | district of columbia |
1930
None, District …
Head, age 45
None, District of Columbia · implied b. ~1885 — 7 household members
| Surname | Clarke |
| Given Name | William L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | District of Columbia |
| Age at First Marriage | 33 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Clerk |
| Industry | U.S. Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12.00 |
| Birth State | District of Columbia |
| Birth Country | United States |
| Birthplace (normalized) | district of columbia |
1940
District-Of-Columbia-County, District …
Head, age 55
District-Of-Columbia-County, District of Columbia · implied b. ~1885 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | William M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | District of Columbia |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | District Of Columbia |
| Occupation | Superintendent of Mail |
| Industry | Wash. Post Office |
| Class of Worker | GW |
| Income (1939) | 3100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | District of Columbia |
| Birth Country | United States |
| Birthplace (normalized) | district of columbia |
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 Clarke across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Clarke
Head · 1930 · age 45 · b. ~1885 · District of Columbia
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — None, District of Columbia
Open full size
1930 US Federal Census — None, District of Columbia
Page Contents
20 people indexed on this census page (ia:1930:15thcensus298unit:0426)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Dora Jenkins | 35 | Sister | Domestic | Virginia |
| 52 | George Pollard | 27 | Cousin | Waiter | Virginia |
| 53 | Paul Greene | 28 | Lodger | House Man | Virginia |
| 54 | James Jenkins | 12 | Guest | — | Virginia |
| 55 | Annie Jenkins | 10 | Guest | — | Virginia |
| 56 | John W. Swann | 44 | Head | Laborer | Maryland |
| 57 | Ellen Swann | 39 | Wife | — | Maryland |
| 58 | Robert Swann | 19 | Son | Laborer | District of Columbia |
| 59 | Thelma Swann | 15 | Daughter | — | Maryland |
| 60 | John Swann | 13 | Son | — | District of Columbia |
| 61 | William L. Clarke THIS PERSON | 45 | Head | Clerk | District of Columbia |
| 62 | Lottie Clarke | 43 | Wife | — | District of Columbia |
| 63 | William Clarke | 9 | Son | — | District of Columbia |
| 64 | Lottie Clarke | 6 | Daughter | — | District of Columbia |
| 65 | Roland Clarke | 1 | Son | — | District of Columbia |
| 66 | James F. Johnson | 73 | Lodger | Laborer | District of Columbia |
| 67 | Edward Hayes | 20 | Lodger | Maid | Virginia |
| 68 | Holland Allen | 21 | Head | Messenger | District of Columbia |
| 69 | Wife Allen | 22 | Wife | — | Maryland |
| 70 | Yvonne Allen | 1 | Daughter | — | District of Columbia |
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)