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William Harmon — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Baltimore, Maryland
Our Model Tree links this William Harmon across the 1910 and 1920 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a son (b.~1903), then head of a 7-person household.
Age 17
b. ~1903
Male
Son
Born: Maryland
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Baltimore, Maryland |
| Surname | Harmon |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | 13Th District Part Of |
| Est. Birth Year | ~1903 |
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 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Leonard Harmon | Son | — | 15 | ~1905 |
| William Harmon | Son | — | 5 | ~1915 |
| Annie Harmon | Spouse | — | 45 | ~1875 |
| Fred Harmon | Son | — | 13 | ~1907 |
| Emory Harmon | Son | — | 3 | ~1917 |
| Frank Harmon | Head | — | 44 | ~1876 |
| William Harmon | Son | — | 17 | ~1903 |
Census Appearances
1910
Baltimore, Maryland
Son, age 7
Baltimore, Maryland · implied b. ~1903 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | William D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Son, age 17
Baltimore, Maryland · implied b. ~1903 — 7 household members
| Surname | Harmon |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | 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 Harmon across 2 US Census years (1910 and 1920) in Baltimore, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
William Harmon
Son · 1920 · age 17 · b. ~1903 · Maryland
★ You are viewing this record
Sibling
Emory Harmon
Sibling · 1920 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Harmon
Sibling · 1920 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Harmon
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Harmon
Sibling · 1920 · 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
1920 US Federal Census — Baltimore, Maryland
Open full size
1920 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu655unit:0645)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ruby Kitchen | 23 | Head | — | Georgia |
| 52 | Robert Kitchen | 4 | Son | — | Georgia |
| 53 | Victoria Kitchen | 3 | Daughter | — | Georgia |
| 54 | Ruby Kitchen | 2 | Daughter | — | Georgia |
| 55 | Isaac Kitchen | 1 | Son | — | Georgia |
| 56 | Frank Harmon | 44 | Head | Brick Mason | Maryland |
| 57 | Annie Harmon | 45 | Wife | — | Maryland |
| 58 | William Harmon THIS PERSON | 17 | Son | — | Maryland |
| 59 | Leonard Harmon | 15 | Son | — | Maryland |
| 60 | Fred Harmon | 13 | Son | — | Maryland |
| 61 | William Harmon | 5 | Son | — | Maryland |
| 62 | Emory Harmon | 3 | Son | — | Maryland |
| 63 | Ralph N. Brown | 44 | Head | Delivery Superintendent | Maryland |
| 64 | Brown | 29 | Wife | — | Maryland |
| 65 | Elsie Brown | 13 | Daughter | — | Maryland |
| 66 | L. Sophia Brown | 12 | Daughter | — | Maryland |
| 67 | Carl Brown | 11 | Son | — | Maryland |
| 68 | Doris Brown | 7 | Daughter | — | Maryland |
| 69 | Gladys Brown | 3 | Daughter | — | Maryland |
| 70 | Brown | 1 | Son | — | Maryland |
| 71 | Nathan Bower | 27 | Head | Brakeman | Maryland |
| 72 | Bower | 23 | Wife | — | Virginia |
| 73 | Lucy Bower | 5 | Daughter | — | Maryland |
| 74 | Henrietta Bower | 1 | Daughter | — | Maryland |
| 75 | John W. Cronan | 37 | Head | Wheelwright | Maryland |
| 76 | Annie Cronan | 57 | Sister | Net Trimmer | Maryland |
| 77 | Julia Cronan | 56 | Sister | — | Maryland |
| 78 | Paul H. Ingers | 55 | Head | Foreman | Maryland |
| 79 | May D. Ingers | 41 | Wife | — | Maryland |
| 80 | Pauline Ingers | 25 | Daughter | Store Clerk | Maryland |
| 81 | L. Gertrude Ingers | 23 | Daughter | Clerk | Maryland |
| 82 | Ingers | 20 | Son | Store | Maryland |
| 83 | Mary Ingers | 18 | Daughter | — | Maryland |
| 84 | Loretta Ingers | 12 | Daughter | — | Maryland |
| 85 | William Semper | 32 | Head | Chemist | Switzerland |
| 86 | Hermina Semper | 33 | Wife | — | Switzerland |
| 87 | William J. Semper | 6 | Son | — | Maryland |
| 88 | Alice D. Semper | 4 | Daughter | — | Maryland |
| 89 | Charles R. Semper | 1 | Son | — | Maryland |
| 90 | Andrew W. Zimmerman | 35 | Head | Electrical Contractor | New Jersey |
| 91 | Grace Zimmerman | 35 | Wife | — | Maryland |
| 92 | Anna C. Zimmerman | 12 | Daughter | — | Maryland |
| 93 | Ellis G. Zimmerman | 10 | Daughter | — | Maryland |
| 94 | Ralph O. Zimmerman | 8 | Son | — | Maryland |
| 95 | Grace G. Zimmerman | 6 | Daughter | — | Maryland |
| 96 | James F. S. Zimmerman | 3 | Son | — | Maryland |
| 97 | Charles W. Frederick | 39 | Head | Chief Clerk | Maryland |
| 98 | Hattie Frederick | 34 | Wife | — | Maryland |
| 99 | Edith L. Frederick | 9 | Daughter | — | Maryland |
| 100 | Nathaniel Rhodes | 30 | Head | Sheet Metal Worker | 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)