JJ
John Jones — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this John Jones across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents Samuel & Edith — first a head (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Jones |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 11 |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Still Runner |
| Industry | Distillery |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1200 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Still Runner |
| Township / Ward | Election District 11 |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| John Jones | Head | — | 25 | ~1915 |
| Richard Jones | Son | — | — | |
| Frank Jones | Son | — | 1 | ~1939 |
| John Jones | Son | — | 5 | ~1935 |
| Florence Jones | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Baltimore, Maryland
Son, age 5
Baltimore, Maryland · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Holland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 15
Baltimore, Maryland · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Holland |
| Occupation | Laborer |
| Industry | Truck Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Head, age 25
Baltimore-County, Maryland · implied b. ~1915 — 5 household members
| Surname | Jones |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 11 |
| 1935 Residence (County) | Baltimore |
| Occupation | Still Runner |
| Industry | Distillery |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1200 |
| 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 Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Samuel Jones (~0.92 confidence) and mother Edith Jones (~0.92 confidence) and mother Edith Jones (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Samuel Jones
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Edith Jones
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Edith Jones
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Jones
Head · 1940 · age 25 · b. ~1915 · Maryland
★ 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 — Baltimore-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-01505-00769)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John R Jones | 57 | Head | Unskilled Not Able To Work | Maryland |
| 42 | Maggie Jones | 53 | Wife | House Wife | Maryland |
| 43 | Pauline Jones | 23 | Daughter | — | Maryland |
| 44 | John J Jones THIS PERSON | 25 | Head | Still Runner | Maryland |
| 45 | Florence M Jones | 26 | Wife | House Wife | Maryland |
| 46 | John J Jr Jones | 5 | Son | — | Maryland |
| 47 | Frank Jones | 1 | Son | — | Maryland |
| 48 | Richard C Jones | None | Son | — | Maryland |
| 49 | Lin'A Merryman | 25 | Head | Laborer | Maryland |
| 50 | Ellen Merryman | 24 | Wife | House Wife | Maryland |
| 51 | Richard Jr Merryman | 5 | Son | — | Maryland |
| 52 | James S Merryman | None | Son | — | Maryland |
| 53 | Margaret E Oplin | 65 | Head | School Teacher | Maryland |
| 54 | Eleanor Sufalski | 50 | Daughter | — | Maryland |
| 55 | John Schultz | 41 | Boarder | Laborer | Maryland |
| 56 | Frederick Wilhelm | 42 | Head | Merchant | Maryland |
| 57 | Ruth A Wilhelm | 36 | Wife | House Wife | Penna |
| 58 | Shirley Wilhelm | 16 | Daughter | — | Maryland |
| 59 | Audrey Wilhelm | 13 | Daughter | — | Maryland |
| 60 | Lydia Wilhelm | 11 | Daughter | — | Maryland |
| 61 | George Fluhn | 45 | Head | Brick Layer | Maryland |
| 62 | Cora Q Fluhn | 47 | Wife | House Wife | Maryland |
| 63 | Evelyn Fluhn | 21 | Daughter | Gas Mask Fact. | Maryland |
| 64 | Doris Fluhn | 11 | Daughter | — | Maryland |
| 65 | George Jr Fluhn | 7 | Son | — | Maryland |
| 66 | George Corbin | 41 | Head | Foreman | Maryland |
| 67 | Annie L Corbin | 39 | Wife | House Wife | Maryland |
| 68 | George W Corbin | 17 | Son | — | Maryland |
| 69 | William Corbin | 13 | Son | — | Maryland |
| 70 | Lawrence Corbin | 11 | Son | — | Maryland |
| 71 | Anne Corbin | 2 | Daughter | — | Maryland |
| 72 | Bertha Corbin | 2 | Daughter | — | Maryland |
| 73 | Edgar Knight | 33 | Head | Mechanic | Maryland |
| 74 | Hazel J Knight | 30 | Wife | House Wife | Maryland |
| 75 | Hazel J Knight | 29 | Daughter | — | Maryland |
| 76 | Patricia Ann Knight | 5 | Daughter | — | Maryland |
Related Census Records
Pedigree Summary
John
Gen 1 · 3 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)