JH
John Hammond — 1920 US Census Record
Model Tree available1920 United States Federal Census · Carroll, Maryland
Our Model Tree links this John Hammond across the 1920, 1930 and 1940 US Censuses in Carroll, Maryland (XGBoost, ~Confirmed), with identified parents Lewis & Rosa — first a son (b.~1899), then head of a 8-person household.
Age 21
b. ~1899
Male
Son
Born: Maryland
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Carroll, Maryland |
| Surname | Hammond |
| Given Name | John M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm Working Out |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Franklin District No 9 |
| Est. Birth Year | ~1899 |
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.
8 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lewis Hammond | Head | — | 53 | ~1867 |
| Sarah Hammond | Other | — | 21 | ~1899 |
| John Hammond | Son | — | 21 | ~1899 |
| Lee Hammond | Son | — | 26 | ~1894 |
| Arthur Hammond | Son | — | 15 | ~1905 |
| Dennis Hammond | Son | — | 20 | ~1900 |
| Lewis Hammond | Son | — | 23 | ~1897 |
| Rosa Hammond | Spouse | — | 47 | ~1873 |
Census Appearances
1920
Carroll, Maryland
Son, age 21
Carroll, Maryland · implied b. ~1899 — 8 household members
| Surname | Hammond |
| Given Name | John M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Farm Working Out |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 31
Baltimore, Maryland · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Johnny |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Transfer Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 43
Baltimore-City-County, Maryland · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | Johnny |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 43 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Laborer |
| Industry | Building Contractor |
| Class of Worker | PW |
| Income (1939) | 380 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 John Hammond across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Lewis Hammond (~0.92 confidence) and mother Rosa Hammond (~0.92 confidence) and mother Virginia Baty (~0.92 confidence) and father Vernon Hammond (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lewis Hammond
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Rosa Hammond
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Virginia Baty
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
Vernon Hammond
b. ~1880
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Hammond
Son · 1920 · age 21 · b. ~1899 · Maryland
★ You are viewing this record
Sibling
Arthur Hammond
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dennis Hammond
Sibling · 1920 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lee Hammond
Sibling · 1920 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lewis Hammond
Sibling · 1920 · age 23
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 — Carroll, Maryland
Open full size
1920 US Federal Census — Carroll, Maryland
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu669unit:1146)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Deanna Hammond | 75 | Head | Farmer | Maryland |
| 52 | George Hammond | 48 | Son | Laborer | Maryland |
| 53 | Ernest Hammond | 42 | Son | Waiter | Maryland |
| 54 | William H Miles | 78 | Head | Farmer | Maryland |
| 55 | Lilly M Miles | 47 | Wife | — | Maryland |
| 56 | Andrew Miles | 14 | Son | Laborer | Maryland |
| 57 | Isaac William Miller | 28 | Head | Farmer | Maryland |
| 58 | Ada May Miller | 27 | Wife | — | Maryland |
| 59 | Ada May Miller | 3 | Daughter | — | Maryland |
| 60 | William Arthur Miller | 0 | Son | — | Maryland |
| 61 | Howard Pickett | 25 | Head | Farmer | Maryland |
| 62 | Irma Lucille Pickett | 24 | Wife | — | Maryland |
| 63 | Monroe T Pickett | 5 | Son | — | Maryland |
| 64 | Harry T Frizzell | 30 | Head | Laborer | Maryland |
| 65 | Helen Margaret Frizzell | 29 | Wife | — | Maryland |
| 66 | Paul Lamire Frizzell | 4 | Son | — | Maryland |
| 67 | Horace Isaac Frizzell | 2 | Son | — | Maryland |
| 68 | Harry B Jr Frizzell | 0 | Son | — | Maryland |
| 69 | Arthur Franklin Stull | 47 | Head | Farmer | Maryland |
| 70 | Sarah Margaret Stull | 45 | Wife | — | Maryland |
| 71 | Rhoda Ellen Stull | 18 | Daughter | — | Maryland |
| 72 | Catherine Elizabeth Stull | 15 | Daughter | — | Maryland |
| 73 | Charles H Garner | 30 | Head | Farmer | Maryland |
| 74 | Olevia J Garner | 28 | Wife | — | Maryland |
| 75 | James Robert Garner | 8 | Son | — | Maryland |
| 76 | Wilbur Garner | 6 | Son | — | Maryland |
| 77 | Laura J Jackson | 68 | Head | — | Maryland |
| 78 | Lucie Dawes | 54 | Head | — | Maryland |
| 79 | Ernest Dritful | 16 | Adopted | Laborer | Maryland |
| 80 | James W Beasley | 62 | Head | Broom Maker | Maryland |
| 81 | Martha Ellen Beasley | 59 | Wife | — | Maryland |
| 82 | Lewis Hammond | 53 | Head | Farm Laborer | Maryland |
| 83 | Rosa Hammond | 47 | Wife | — | Maryland |
| 84 | Lee D Hammond | 26 | Son | Laborer | Maryland |
| 85 | Lewis C Hammond | 23 | Son | Laborer | Maryland |
| 86 | John M Hammond THIS PERSON | 21 | Son | Laborer | Maryland |
| 87 | Dennis G Hammond | 20 | Son | Laborer | Maryland |
| 88 | Arthur L Hammond | 15 | Son | Laborer | Maryland |
| 89 | Sarah Hammond | 21 | Daughter in law | — | Maryland |
| 90 | Sydney G Barnes | 32 | Head | Farmer | Maryland |
| 91 | Elizabeth L Barnes | 31 | Wife | — | Maryland |
| 92 | Mary M Barnes | 64 | Mother | — | Maryland |
| 93 | Lewis S Beahan | 39 | Head | Laborer | Maryland |
| 94 | Mamie Beahan | 39 | Wife | — | Maryland |
| 95 | Arthur A Haines | 72 | Head | Plaster | Maryland |
| 96 | Minnie A Haines | 58 | Wife | — | Maryland |
| 97 | Pearl S Haines | 19 | Daughter | Laborer | Maryland |
| 98 | David H Hooper | 33 | Head | Laborer | Maryland |
| 99 | Goldie B Hooper | 23 | Wife | — | Maryland |
| 100 | Thelma Hooper | 1 | Daughter | — | Maryland |
Pedigree Summary
John + 4 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)