JH
John Harrison — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Harrison across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Harrison |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Industry | S |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1924 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Theresa Harrison | Daughter | — | 11 | ~1929 |
| Ella Harrison | Daughter | — | 9 | ~1931 |
| Margaretta Harrison | Daughter | — | 9 | ~1931 |
| Dorothy Harrison | Daughter | — | 13 | ~1927 |
| William Harrison | Head | — | 50 | ~1890 |
| Hazel Harrison | Son | — | 7 | ~1933 |
| Walter Harrison | Son | — | 19 | ~1921 |
| William Harrison | Son | — | 23 | ~1917 |
| Thomas Harrison | Son | — | 5 | ~1935 |
| John Harrison | Son | — | 16 | ~1924 |
| Bertha Harrison | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Baltimore, Maryland
Son, age 6
Baltimore, Maryland · implied b. ~1924 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 16
Baltimore-City-County, Maryland · implied b. ~1924 — 11 household members
| Surname | Harrison |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Industry | S |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 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 Harrison across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Harrison
Son · 1940 · age 16 · b. ~1924 · Maryland
★ You are viewing this record
Sibling
Margaretta Harrison
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Harrison
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Harrison
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Harrison
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Harrison
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Harrison
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Harrison
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Harrison
Sibling · 1940 · age 19
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
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01516-00156)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Potter | 50 | Wife | — | Maryland |
| 2 | Joseph Potter | 11 | Son | — | Maryland |
| 3 | Samuel Birmingham | 69 | Head | — | Maryland |
| 4 | Ida Birmingham | 58 | Wife | — | Maryland |
| 5 | Bessie Jones | 33 | Daughter | Taper | Maryland |
| 6 | Harry Jones | 11 | Grandson | — | Maryland |
| 7 | Betty Ruth Jones | 9 | Granddaughter | — | Maryland |
| 8 | Margaret Theodore | 62 | Head | — | Illinois |
| 9 | George Theodore | 25 | Son | Manager | Louisiana |
| 10 | Mary E. Theodore | 18 | Daughter | New Worker | Louisiana |
| 11 | Manuel Theodore | 36 | Head | Manager | Louisiana |
| 12 | Gene Theodore | 27 | Son | Saleslady | Maryland |
| 13 | Joy Theodore | 1 | Daughter | — | Maryland |
| 14 | Edward D. Heddinger | 35 | Head | Chauffeur | Maryland |
| 15 | Virginia Heddinger | 26 | Wife | — | West Virginia |
| 16 | Edward C. Heddinger | 1 | Son | — | Maryland |
| 17 | Frank Myers | 33 | Lodger | Chauffeur | Pennsylvania |
| 18 | William F. Harrison | 50 | Head | Fireman | Maryland |
| 19 | Bertha Harrison | 50 | Wife | — | Maryland |
| 20 | William, Jr. Harrison | 23 | Son | Enlisted Man | Maryland |
| 21 | Walter Harrison | 19 | Son | Laborer | Maryland |
| 22 | John Harrison THIS PERSON | 16 | Son | — | Maryland |
| 23 | Dorothy Harrison | 13 | Daughter | — | Maryland |
| 24 | Theresa Harrison | 11 | Daughter | — | Maryland |
| 25 | Ella Harrison | 9 | Daughter | — | Maryland |
| 26 | Margaretta Harrison | 9 | Daughter | — | Maryland |
| 27 | Hazel Harrison | 7 | Son | — | Maryland |
| 28 | Thomas Harrison | 5 | Son | — | Maryland |
| 29 | Howard B. Partheee | 43 | Head | Guard | Maryland |
| 30 | Catherine Partheee | 32 | Wife | — | Maryland |
| 31 | Howard B., Jr. Partheee | 5 | Son | — | Maryland |
| 32 | Benjamin Cofill | 48 | Head | — | Maryland |
| 33 | Martha Cofill | 52 | Wife | — | Maryland |
| 34 | Anthony Patti | 33 | Head | Chauffeur | Pennsylvania |
| 35 | Muriel Patti | 27 | Wife | — | Maryland |
| 36 | Anthony, Jr. Patti | 5 | Son | — | Maryland |
| 37 | Nancy Patti | 3 | Daughter | — | Maryland |
| 38 | Hauer Howell | 32 | Head | Compositor | Maryland |
| 39 | Velma Howell | 30 | Wife | Dressmaker | Maryland |
| 40 | Merla Howell | 12 | Daughter | — | Maryland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)