JP
John Porter — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this John Porter across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents John & Nickolas — first a head (b.~1907), then head of a 7-person household.
Age 33
b. ~1907
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Porter |
| Given Name | John R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 2 |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Cab Company |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 750 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Chauffeur |
| Township / Ward | Election District 2 |
| Est. Birth Year | ~1907 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Doris Porter | Daughter | — | 6 | ~1934 |
| Patsy Porter | Daughter | — | 2 | ~1938 |
| John Porter | Head | — | 33 | ~1907 |
| Elizabeth Euler | Other | — | 18 | ~1922 |
| Jennie Euler | Other | — | 55 | ~1885 |
| Beatrice Euler | Other | — | 27 | ~1913 |
| Evelyn Porter | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Baltimore, Maryland
Son, age 12
Baltimore, Maryland · implied b. ~1908 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 23
Baltimore, Maryland · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Truck Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Head, age 33
Baltimore-County, Maryland · implied b. ~1907 — 7 household members
| Surname | Porter |
| Given Name | John R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 2 |
| 1935 Residence (County) | Baltimore |
| Occupation | Chauffeur |
| Industry | Cab Company |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 750 |
| Highest Grade | H 2 |
| 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 Porter across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Porter (~0.92 confidence) and father Nickolas Porter (~0.92 confidence) and mother Sophia Porter (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Porter
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Nickolas Porter
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Sophia Porter
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Porter
Head · 1940 · age 33 · b. ~1907 · 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
40 people indexed on this census page (nara:1940:m-t0627-01503-00795)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carroll G. Lloyd | 15 | Son | — | West Virginia |
| 2 | Jean W. Lloyd | 9 | Daughter | — | Maryland |
| 3 | Elmer J. Farley | 53 | Head | — | Maryland |
| 4 | Lillian Farley | 50 | Wife | — | Maryland |
| 5 | Lillian V. Farley | 24 | Daughter | Secretary | Maryland |
| 6 | Charles E. Farley | 21 | Son | Salesman | Maryland |
| 7 | Harry L. Farley | 19 | Son | Salesman | Maryland |
| 8 | Virginia Farley | 18 | Daughter | — | Maryland |
| 9 | Randolph Burk | 23 | Head | Hauling | Maryland |
| 10 | Mary C. Burk | 25 | Wife | — | Virginia |
| 11 | Mary E. Burk | 1 | Daughter | — | Maryland |
| 12 | Randolph Jr. Burk | 1 | Son | — | Maryland |
| 13 | Harry Palmer | 55 | Head | Iron Molder | Maryland |
| 14 | Mary E. Palmer | 55 | Wife | — | Maryland |
| 15 | Elmer J. Palmer | 31 | Son | Machine Operator | Maryland |
| 16 | Donald D. Palmer | 16 | Son | — | Maryland |
| 17 | Horace Palmer | 15 | Son | — | Maryland |
| 18 | Marie E. Palmer | 13 | Daughter | — | Maryland |
| 19 | Elizabeth Euler | 81 | Head | — | Maryland |
| 20 | John R. Porter THIS PERSON | 33 | Head | Chauffeur | Maryland |
| 21 | Evelyn M. Porter | 31 | Wife | — | Maryland |
| 22 | Doris E. Porter | 6 | Daughter | — | Maryland |
| 23 | Patsy A. Porter | 2 | Daughter | — | Maryland |
| 24 | Jennie C. Euler | 55 | Mother-in-law | Seamstress | Maryland |
| 25 | Elizabeth Euler | 18 | Sister-in-law | Housework | Maryland |
| 26 | Beatrice Euler | 27 | Sister-in-law | Practical Nurse | Maryland |
| 27 | Alvin N. Euler | 45 | Head | Proprietor | Maryland |
| 28 | Anna H. Euler | 44 | Wife | — | Maryland |
| 29 | Alvin E. Euler | 19 | Son | Station Attendant | Maryland |
| 30 | Helen E. Euler | 18 | Daughter | — | Maryland |
| 31 | William E. Euler | 14 | Son | — | Maryland |
| 32 | Lorenzo J. Beahm | 34 | Head | Foreman | Virginia |
| 33 | Anna L. Beahm | 37 | Wife | — | Virginia |
| 34 | George C. Beahm | 13 | Son | — | Virginia |
| 35 | Lurline J. Beahm | 12 | Daughter | — | Virginia |
| 36 | Frank F. Beahm | 5 | Son | — | Maryland |
| 37 | Ernest Biser | 34 | Head | Hanger-On | Maryland |
| 38 | Helen M. Biser | 29 | Wife | — | Poland |
| 39 | Pauline Dost | 79 | Mother-in-law | — | Poland |
| 40 | Elizabeth C. Dost | 32 | Sister-in-law | Registered Nurse | Poland |
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)