JK
John Knight — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Knight across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents John & Lena — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Knight |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Laboratory Assistant |
| Industry | Oil works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laboratory Assistant |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1909 |
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 |
|---|---|---|---|---|
| Ann Knight | Daughter | — | 6 | ~1934 |
| John Knight | Head | — | 31 | ~1909 |
| Gladys Knight | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Baltimore, Maryland
Son, age 11
Baltimore, Maryland · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Germany |
| 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 21
Baltimore, Maryland · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Germany |
| Occupation | Checker |
| Industry | Standard Oil |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 31
Baltimore-City-County, Maryland · implied b. ~1909 — 3 household members
| Surname | Knight |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Laboratory Assistant |
| Industry | Oil works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | H-4 |
| 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 Knight across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Knight (~0.92 confidence) and mother Lena Knight (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Knight
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Lena Knight
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Knight
Head · 1940 · age 31 · b. ~1909 · 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
39 people indexed on this census page (nara:1940:m-t0627-01538-00591)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph S. Reims | 24 | Cousin | Laborer | Maryland |
| 42 | Henry Bulger | 30 | Head | Insulator | Maryland |
| 43 | Mildred Bulger | 22 | Wife | — | Maryland |
| 44 | Carl Bulger | 6 | Son | — | Maryland |
| 45 | John E. Gebhardt | 52 | Head | — | Maryland |
| 46 | Joseph Sontur | 56 | Head | Reamer | Russia |
| 47 | Elizabeth Sontur | 44 | Wife | — | Russia |
| 48 | Frank Sontur | 21 | Son | Laborer | Maryland |
| 49 | Raymond Sontur | 25 | Head | Machinist | Maryland |
| 50 | Wilma Sontur | 25 | Wife | Stenographer | Maryland |
| 51 | Marie Sontur | 54 | Head | Baker | Germany |
| 52 | Francis Sontur | 22 | Son | Baker Helper | Maryland |
| 53 | William Sontur | 16 | Son | — | Maryland |
| 54 | John A. Ewing | 26 | Son-in-law | Clerical | Maryland |
| 55 | Teresa Ewing | 20 | Daughter | — | Maryland |
| 56 | Anna M. Ewing | 2 | Granddaughter | — | Maryland |
| 57 | Albert J. Ewing | 0 | Grandson | — | Maryland |
| 59 | Catherine Roman | 47 | Head | Seamstress | Maryland |
| 60 | Ernest Moy | 25 | Son-in-law | Cutter | Maryland |
| 61 | Doris Moy | 23 | Daughter | Operator | Maryland |
| 62 | Anna Lehlman | 70 | Head | — | Germany |
| 63 | Barbara Lehlman | 49 | Daughter | — | Maryland |
| 64 | Anna Lehlman | 41 | Daughter | Clerical Worker | Maryland |
| 65 | Mittie Lehlman | 31 | Daughter | Saleslady | Maryland |
| 66 | Annie Mark | 56 | Head | Clerk | Maryland |
| 67 | Paul Oatit | 24 | Head | Oil Treater | Maryland |
| 68 | Eleanor Oatit | 20 | Wife | — | Maryland |
| 69 | Dorothy Oatit | 0 | Daughter | — | Maryland |
| 70 | John Knight THIS PERSON | 31 | Head | Laboratory Assistant | Maryland |
| 71 | Gladys Knight | 32 | Wife | Stenographer | Maryland |
| 72 | Ann J. Knight | 6 | Daughter | — | Maryland |
| 73 | Edward Borhowicz | 36 | Head | Night Watchman | Maryland |
| 74 | Eleanor Borhowicz | 35 | Wife | — | Maryland |
| 75 | John Jr. Borhowicz | 15 | Son | — | Maryland |
| 76 | Mary D. Borhowicz | 13 | Daughter | — | Maryland |
| 77 | Francis Borhowicz | 9 | Son | — | Maryland |
| 78 | George Borhowicz | 2 | Son | — | Maryland |
| 79 | Anthony Michalski | 42 | Head | Foreman | Pennsylvania |
| 80 | Mary Michalski | 39 | Wife | — | Maryland |
Pedigree Summary
John
Gen 1 · 2 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)