JF
John Foster — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Foster across the 1910, 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Arthur & Lincoln — first a head (b.~1899), then head of a 3-person household.
Age 41
b. ~1899
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Foster |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2000 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Catherine Foster | Daughter | — | 15 | ~1925 |
| John Foster | Head | — | 41 | ~1899 |
| Mary Foster | Spouse | — | 42 | ~1898 |
Census Appearances
1910
Baltimore, Maryland
Son, age 8
Baltimore, Maryland · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
None, Maryland
Son, age 19
None, Maryland · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 30
Baltimore, Maryland · implied b. ~1900 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Conductor |
| Industry | Street Railway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 41
Baltimore-City-County, Maryland · implied b. ~1899 — 3 household members
| Surname | Foster |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2000 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 Foster across 4 US Census years (1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Arthur Foster (~0.92 confidence) and father Lincoln Foster (~0.92 confidence) and mother Mary Foster (~0.92 confidence) and mother Annie Foster (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Foster
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Lincoln Foster
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Foster
b. ~1861
Source mother
● Household
· direct · ~0.92
Mother
Annie Foster
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Foster
Head · 1940 · age 41 · b. ~1899 · 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-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-t0627-01532-00208)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary L. Richardson | 12 | Daughter | — | Maryland |
| 42 | Edward A. Hahn | 29 | Head | Clerk | Maryland |
| 43 | Evelyn Hahn | 29 | Wife | — | Maryland |
| 44 | Marvin Watson | 52 | Head | Sprinkler Fitter Helper | Maryland |
| 45 | Rita Watson | 47 | Wife | — | Maryland |
| 46 | Marvin K. Watson | 26 | Son | Bench Hand | Maryland |
| 47 | Walter E. Ralston | 64 | Roomer | Watchman | England |
| 48 | Harry L. Worke | 44 | Head | Police Officer | Virginia |
| 49 | Christine Worke | 41 | Wife | — | Germany |
| 50 | Homer Jr. Worke | 16 | Son | — | Maryland |
| 51 | Bernhard Worke | 14 | Son | — | Maryland |
| 52 | Bernard G. Byer | 45 | Boarder | Salesman | Germany |
| 53 | John L. Moore | 29 | Head | Fireman | Maryland |
| 54 | Mary A. Moore | 24 | Wife | — | Maryland |
| 55 | John F. Moore | 1 | Son | — | Maryland |
| 56 | William L. Rolan | 32 | Head | Chauffeur | Maryland |
| 57 | Frances M. Rolan | 25 | Wife | Credit Manager | Maryland |
| 58 | John E. Foster THIS PERSON | 41 | Head | — | Maryland |
| 59 | Mary V. Foster | 42 | Wife | — | Maryland |
| 60 | Catherine E. Foster | 15 | Daughter | — | Maryland |
| 61 | Austin C. Ford | 47 | Head | Automobile Painter | Maryland |
| 62 | Hilda S. Ford | 46 | Wife | — | Maryland |
| 63 | John R. Ridgely | 49 | Head | Checker | Maryland |
| 64 | Flossie Ridgely | 54 | Wife | — | Maryland |
| 65 | John G. Ridgely | 26 | Son | 2Nd Helper | Maryland |
| 66 | Lillian E. Ridgely | 22 | Daughter in law | Waitress | Maryland |
| 67 | Virginia Ridgely | 4 | Daughter | — | Maryland |
| 68 | John F. Ridgely | 3 | Grandson | — | Maryland |
| 69 | Wilber Baldwin | 41 | Head | Kyan Finisher | Maryland |
| 70 | Margaret Baldwin | 34 | Wife | — | Maryland |
| 71 | Wilber Jr. Baldwin | 12 | Son | Carrier | Maryland |
| 72 | Audrey Baldwin | 14 | Daughter | — | Maryland |
| 73 | Melvin Baldwin | 10 | Son | — | Maryland |
| 74 | Irene Baldwin | 8 | Daughter | — | Maryland |
| 75 | Margaret Baldwin | 6 | Daughter | — | Maryland |
| 76 | Charles W. Ensor | 61 | Head | Plumber | Maryland |
| 77 | Lillie Ensor | 41 | Wife | Clerk | Maryland |
| 78 | Paul Harris | 36 | Head | Clerk | Maryland |
| 79 | Mary Harris | 32 | Wife | — | Maryland |
| 80 | Shirley Harris | 15 | Daughter | — | Maryland |
Pedigree Summary
John
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 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)