JP
John Preston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this John Preston across the 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Preston |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 11 |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Farm |
| Class of Worker | OA |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Farm |
| Township / Ward | Election District 11 |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Nathaniel Preston | Son | — | 10 | ~1930 |
| John Preston | Son | — | 16 | ~1924 |
| Harris Preston | Son | — | 3 | ~1937 |
| Bertha Preston | Daughter | — | 19 | ~1921 |
| Ernest Preston | Head | — | 54 | ~1886 |
| Bertha Preston | Spouse | — | 38 | ~1902 |
| Viola Preston | Daughter | — | 15 | ~1925 |
| Samuel Norman | Other | — | 68 | ~1872 |
Census Appearances
1930
Baltimore, Maryland
Son, age 5
Baltimore, Maryland · implied b. ~1925 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Preston |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Son, age 16
Baltimore-County, Maryland · implied b. ~1924 — 8 household members
| Surname | Preston |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 11 |
| 1935 Residence (County) | Baltimore |
| Occupation | Farm |
| Class of Worker | OA |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 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 Preston across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Preston
Son · 1940 · age 16 · b. ~1924 · Maryland
★ You are viewing this record
Sibling
Nathaniel Preston
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Viola Preston
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Preston
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harris Preston
Sibling · 1940 · age 3
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-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01505-00773)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clarence Costin | 21 | Son-in-law | Farm | Maryland |
| 42 | W. Edwin Jones | 27 | Head | Farm | Maryland |
| 43 | Margaret Jones | 22 | Wife | — | Maryland |
| 44 | James Norman | 30 | Head | Farm | Maryland |
| 45 | Effie Norman | 31 | Wife | — | Maryland |
| 46 | Francis Norman | 3 | Daughter | — | Maryland |
| 47 | Ernest Preston | 54 | Head | Farm | Maryland |
| 48 | Bertha Preston | 38 | Wife | — | Maryland |
| 49 | Bertha Preston | 19 | Daughter | Farm | Maryland |
| 50 | John Preston THIS PERSON | 16 | Son | Farm | Maryland |
| 51 | Viola Preston | 15 | Daughter | Farm | Maryland |
| 52 | Nathaniel Preston | 10 | Son | — | Maryland |
| 53 | Harris Preston | 3 | Son | — | Maryland |
| 54 | Samuel Norman | 68 | Uncle | Farm | Maryland |
| 55 | Amelia Jackson | 40 | Head | Farm | Maryland |
| 56 | John R. Rainy | 20 | Son | Farm | Maryland |
| 57 | Saunders Lee | 61 | Head | Farm | Virginia |
| 58 | Alice Lee | 54 | Wife | — | Maryland |
| 59 | Lucial Lee | 19 | Daughter | Farm | Maryland |
| 60 | Saunders Jr. Lee | 21 | Son | Farm | Maryland |
| 61 | Robert Lee | 17 | Son | Farm | Maryland |
| 62 | Ervin Lee | 14 | Son | Farm | Maryland |
| 63 | Arvell Lee | 12 | Son | — | Maryland |
| 64 | Jennie Lee | 10 | Daughter | — | Maryland |
| 65 | Rosemary Lee | 9 | Daughter | — | Maryland |
| 66 | Richard Lee | 27 | Head | Laborer | Maryland |
| 67 | Amanda Lee | 21 | Wife | Housewife | Maryland |
| 68 | Harris Yancy | 62 | Father | Farm | Virginia |
| 69 | Franklin Yancy | 26 | Brother | Laborer | Maryland |
| 70 | Bessie Yancy | 19 | Sister | House Girl | Maryland |
| 71 | Louis Layton | 57 | Head | Farmer | Italy |
| 72 | Anna Layton | 46 | Wife | House Wife | Italy |
| 73 | George Layton | 23 | Son | Farming | Maryland |
| 74 | Elizabeth Layton | 22 | Daughter | Gas Mask | Maryland |
| 75 | Stella Layton | 20 | Daughter | Sewing | Maryland |
| 76 | Michel Stanton | 82 | Head | Farmer | Maryland |
| 77 | Anna Stanton | 82 | Sister | Housewife | Maryland |
| 78 | Ira | 44 | Son | Clerk | Maryland |
| 79 | Blanche | 35 | Daughter-in-law | Clerk | Maryland |
| 80 | — | 5 | — | — | 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)