KJ
Katie Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Katie Johnson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 3-person household.
Age 62
b. ~1878
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Johnson |
| Given Name | Katie V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Highest Grade | No 1 |
| 1935 Residence | same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1878 |
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 Katie | Age | Birth yr |
|---|---|---|---|---|
| Niles Johnson | Head | — | 63 | ~1877 |
| Niles Johnson | Son | — | 18 | ~1922 |
| Katie Johnson | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Baltimore, Maryland
Other, age 38
Baltimore, Maryland · implied b. ~1882 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Kate |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | Black |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laundress |
| Industry | At Home |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Other, age 52
Baltimore, Maryland · implied b. ~1878 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Katie V |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 42 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 62
Baltimore-City-County, Maryland · implied b. ~1878 — 3 household members
| Surname | Johnson |
| Given Name | Katie V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | No 1 |
| 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 Katie Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Katie Johnson
Spouse · 1940 · age 62 · b. ~1878 · 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-t0627-01515-00394)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William F. Roberts | 59 | Father | — | Maryland |
| 42 | Walter H. Louder | 55 | Head | Engineer | Pennsylvania |
| 43 | Nora M. S. Louder | 58 | Wife | — | Maryland |
| 44 | Charles F. Nagle | 81 | Father-in-law | — | Maryland |
| 45 | Georgeanna Nagle | 82 | Mother-in-law | — | Maryland |
| 46 | Niles P. Johnson | 63 | Head | Clerk | Sweden |
| 47 | Katie V. Johnson THIS PERSON | 62 | Wife | — | Maryland |
| 48 | Niles J. Johnson | 18 | Son | — | Maryland |
| 49 | John T. Reynolds | 37 | Head | Police Man | Maryland |
| 50 | Mary E. Reynolds | 34 | Wife | — | Maryland |
| 51 | Mary C. Reynolds | 7 | Daughter | — | Maryland |
| 52 | John D. Boyd | 30 | Head | Guard | Maryland |
| 53 | Sadie L. Boyd | 59 | Mother | Janitress | Maryland |
| 54 | George Albert | 65 | Head | — | Maryland |
| 55 | Mamie L. Albert | 65 | Wife | — | Maryland |
| 56 | Marie Albert | 38 | Daughter | Stenographer | Maryland |
| 57 | John P. Maag | 30 | Head | Machinist | Germany |
| 58 | Catherine E. Maag | 28 | Wife | — | Maryland |
| 59 | Donald H. Schroeder | 29 | Head | Crane Operator | Maryland |
| 60 | Edna S. Schroeder | 30 | Wife | — | Maryland |
| 61 | Edward H. Knickman | 64 | Head | Hard Wood Finisher | Maryland |
| 62 | Elizabeth B. Knickman | 63 | Wife | — | Maryland |
| 63 | John E. Knickman | 33 | Son | Clerk | Maryland |
| 64 | Gustavus W. Wilbur | 52 | Head | Machinist | Maryland |
| 65 | Joseph L. Day | 52 | Head | Machinist | Maryland |
| 66 | Elizabeth M. Day | 53 | Wife | — | Maryland |
| 67 | George R. Vogel | 29 | Son-in-law | X Ray Engineer | Maryland |
| 68 | Catherine W. Vogel | 25 | Daughter | — | Maryland |
| 69 | Catherine E. Vogel | 1 | Granddaughter | — | Maryland |
| 70 | William R. Walton | 66 | Head | — | Maryland |
| 71 | Marionette Walton | 53 | Wife | — | Maryland |
| 72 | Elsie W. Schmoll | 54 | Head | Stenographer | Maryland |
| 73 | Cecelia L. H. Marsch | 69 | Head | — | Maryland |
| 74 | Julius H. Hinton | 20 | Grandson | Salesman | Maryland |
| 75 | Louis B. Young | 40 | Head | Sales Manager | Maryland |
| 76 | Christine Young | 71 | Mother | — | Maryland |
| 77 | Raymond C. Jones | 39 | Head | Brass Finisher | Maryland |
| 78 | Pearl M. B. Jones | 32 | Wife | — | Pennsylvania |
| 79 | Raymond C. Jones | 8 | Son | — | Maryland |
| 80 | Samuel L. Deeds | 50 | Head | Sales Manager | 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)