HC
Harry Clark — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Washington, District of Columbia
Our Model Tree links this Harry Clark across the 1920, 1930 and 1940 US Censuses in Washington, District of Columbia (XGBoost, ~Confirmed) — first a head (b.~1876), then head of a 6-person household.
Age 44
b. ~1876
Male
Head
Born: Maryland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Washington, District of Columbia |
| Surname | Clark |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Washington City |
| Est. Birth Year | ~1876 |
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 1920 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Mildred Clark | Daughter | — | 5 | ~1915 |
| Harry Clark | Head | — | 44 | ~1876 |
| Sally Kelly | Other | — | 21 | ~1899 |
| Frank Kelly | Other | — | 28 | ~1892 |
| Harry Clark | Son | — | 8 | ~1912 |
| Carrie Clark | Spouse | — | 36 | ~1884 |
Census Appearances
1920
Washington, District …
Head, age 44
Washington, District of Columbia · implied b. ~1876 — 6 household members
| Surname | Clark |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
District Of …
Head, age 54
District Of Columbia, District of Columbia · implied b. ~1876 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | Henry M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 38 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Clerk |
| Industry | U.S. Government |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 55.00 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
District-Of-Columbia-County, District …
Head, age 67
District-Of-Columbia-County, District of Columbia · implied b. ~1873 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | Harry F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | District Of Columbia |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| 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 Harry Clark across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Harry Clark
Head · 1920 · age 44 · b. ~1876 · District of Columbia
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Washington, District of Columbia
Open full size
1920 US Federal Census — Washington, District of Columbia
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu207unit:0969)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Samuel | 22 | Lodger | Clerk | Connecticut |
| 52 | Wade Conway | 22 | Lodger | Inspector | Ohio |
| 53 | Erosa M Hardy | 47 | Head | Saleswoman | Maryland |
| 54 | Ruth Hardy | 23 | Daughter | Stenographer | Maryland |
| 55 | James Robert Hardy | 21 | Son | Construction | Maryland |
| 56 | Alfred J Hardy | 20 | Son | Machinist | Maryland |
| 57 | Edward Hardy | 14 | Son | — | Maryland |
| 58 | Irene Hardy | 11 | Son | — | Maryland |
| 59 | Herbert Hardy | 9 | Son | — | District of Columbia |
| 60 | Ralph Hardy | 7 | Son | — | District of Columbia |
| 61 | Mary Shipley | 62 | Head | — | Maryland |
| 62 | Killough | 35 | Boarder | — | Maryland |
| 63 | Mary E Killough | 33 | Daughter | Saleswoman | Pennsylvania |
| 64 | Robert Killough | 2 | Grandson | — | District of Columbia |
| 65 | Harry Clark THIS PERSON | 44 | Head | — | Maryland |
| 66 | Carrie Clark | 36 | Wife | Fireman | District of Columbia |
| 67 | Harry J Clark | 8 | Son | — | District of Columbia |
| 68 | Mildred Clark | 5 | Daughter | — | District of Columbia |
| 69 | Frank Kelly | 28 | Lodger | — | District of Columbia |
| 70 | Sally Kelly | 21 | Lodger | — | Maryland |
| 71 | Edward Mcnitus | 42 | Head | Helper | Virginia |
| 72 | Mamie Mcnitus | 36 | Wife | — | New York |
| 73 | William Mcnitus | 18 | Son | Machinist | Maryland |
| 74 | George Mcnitus | 16 | Son | Messenger | District of Columbia |
| 75 | Vincent Solecky | 29 | Head | Messenger | District of Columbia |
| 76 | Beula Solecky | 28 | Wife | — | Virginia |
| 77 | George Clifford | 49 | Head | Musician | Virginia |
| 78 | Isabella Clifford | 47 | Wife | — | District of Columbia |
| 79 | William Clifford | 23 | Son | Printer | District of Columbia |
| 80 | Mary E Clifford | 21 | Daughter | — | District of Columbia |
| 81 | Bessie G Clifford | 19 | Daughter | Stenographer | District of Columbia |
| 82 | George W Clifford | 15 | Son | — | District of Columbia |
| 83 | Isabella Clifford | 12 | Daughter | Stenographer | District of Columbia |
| 84 | James D Clifford | 10 | Son | Pressman | District of Columbia |
| 85 | Louis Soldano | 41 | Head | — | District of Columbia |
| 86 | Emily Soldano | 37 | Wife | — | Maryland |
| 87 | Soldano | None | — | Brakeman | Maryland |
| 88 | Soldano | None | — | Cashier | — |
| 89 | Henry Phillips | 55 | Head | Electrician | Maryland |
| 90 | Belle Phillips | 61 | Wife | — | Maryland |
| 91 | Myrtle Sanderson | 34 | Head | Supervisor | Kentucky |
| 92 | Shirley Sanderson | 14 | Son | — | Kentucky |
| 93 | George Sanderson | 26 | Brother | — | Kentucky |
| 94 | Virginia Sanderson | 71 | Mother | Clerk | Kentucky |
| 95 | Walter S Ray | 31 | Head | — | Ohio |
| 96 | Castaldo Ray | 30 | Wife | Machinist | Germany |
| 97 | Pauline Ray | 12 | Daughter | — | Ohio |
| 98 | James Shortell | 41 | Lodger | — | New York |
| 99 | Laura Shortell | 43 | Lodger | Helper | Indiana |
| 100 | Clarence Pitzer | 35 | Head | Helper | Virginia |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)