JH
John Hammond — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Hammond across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Hannah — first a head (b.~1898), then head of a 5-person household.
Age 42
b. ~1898
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Hammond |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Emsworth Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Automobile repairman |
| Industry | Bureau of Mines |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1300 |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Automobile Repairman |
| Township / Ward | Emsworth Borough |
| Est. Birth Year | ~1898 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Marjorie Hammond | Daughter | — | 3 | ~1937 |
| Beverly Hammond | Daughter | — | 11 | ~1929 |
| Marilyn Hammond | Daughter | — | 12 | ~1928 |
| John Hammond | Head | — | 42 | ~1898 |
| George Hammond | Spouse | — | 36 | ~1904 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 21
Allegheny, Pennsylvania · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | machinist |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 31
Allegheny, Pennsylvania · implied b. ~1899 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 25 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Salesman |
| Industry | Motor Cars |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 8500 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 42
Allegheny-County, Pennsylvania · implied b. ~1898 — 5 household members
| Surname | Hammond |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Emsworth Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Automobile repairman |
| Industry | Bureau of Mines |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1300 |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 2 locations, using XGBoost record linkage. Identified parents: mother Hannah Hammond (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Hannah Hammond
b. ~1863
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Hammond
Head · 1940 · age 42 · b. ~1898 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03418-00903)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Hager | 29 | Head | Baker | Germany |
| 2 | Carmel Hager | 25 | Wife | — | Ohio |
| 3 | Annette M. Hager | 2 | Daughter | — | — |
| 4 | Fred Jr. Hager | 0 | Son | — | — |
| 5 | Eleanor Tchorzewski | 22 | Head | Punch-Hand | Pennsylvania |
| 6 | William Tchorzewski | 5 | Son | — | — |
| 7 | John Dorton | 41 | Head | Field Superintendent | Pennsylvania |
| 8 | Vilma Dorton | 34 | Wife | — | Pennsylvania |
| 9 | Joan Dorton | 7 | Daughter | — | Pennsylvania |
| 10 | Emil Tyler | 49 | Head | Tailor | Georgia |
| 11 | Elizabeth Tyler | 47 | Wife | — | Pennsylvania |
| 12 | Betty Tyler | 23 | Daughter | Stenographer | Pennsylvania |
| 13 | Emil Jr. Tyler | 12 | Son | — | Pennsylvania |
| 14 | James A. O'Brien | 32 | Head | Salesman | Pennsylvania |
| 15 | Mildred O'Brien | 28 | Wife | — | Pennsylvania |
| 16 | Dorothy O'Brien | 7 | Daughter | — | Pennsylvania |
| 17 | John O'Brien | 4 | Son | — | — |
| 18 | Dennis O'Brien | 3 | Son | — | — |
| 19 | Margaret O'Brien | 2 | Daughter | — | — |
| 20 | James Jr. O'Brien | 1 | Son | — | — |
| 21 | John Hammond THIS PERSON | 42 | Head | Automobile Repairman | Pennsylvania |
| 22 | George Hammond | 36 | Wife | — | Pennsylvania |
| 23 | Marilyn Hammond | 12 | Daughter | — | Pennsylvania |
| 24 | Beverly Hammond | 11 | Daughter | — | Pennsylvania |
| 25 | Marjorie Hammond | 3 | Daughter | — | — |
| 26 | Joseph Eades | 57 | Head | Clerk | England |
| 27 | Ada Eades | 55 | Wife | — | England |
| 28 | Irving Haman | 36 | Head | Mechanic | Indiana |
| 29 | Virginia Haman | 30 | Wife | — | Michigan |
| 30 | Harold C. Haman | 7 | Son | — | Pennsylvania |
| 31 | Donald Haman | 4 | Son | — | — |
| 32 | Jane Haman | 2 | Daughter | — | — |
| 33 | Virginia Haman | 1 | Daughter | — | — |
| 34 | Anna Bauder | 50 | Head | — | Germany |
| 35 | Ruth Bauder | 21 | Daughter | Secretary | Germany |
| 36 | Geo Remster | 40 | Head | Clerk | Illinois |
| 37 | Luetta S. Remster | 38 | Wife | — | Pennsylvania |
| 38 | Walter Remster | 12 | Son | — | Pennsylvania |
| 39 | Barbara J. Remster | 6 | Daughter | — | Pennsylvania |
| 40 | Mary Piotts | 71 | Mother-in-law | — | Germany |
Pedigree Summary
John
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)