MK
Mary Kennedy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Kennedy across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Frances — first a daughter (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Kennedy |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 226 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Stenographer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kennedy | Daughter | — | 21 | ~1919 |
| Frances Kennedy | Head | — | 58 | ~1882 |
| Mary Kennedy | Other | — | 79 | ~1861 |
| Daniel Kennedy | Son | — | 25 | ~1915 |
| Michael Kennedy | Son | — | 23 | ~1917 |
Census Appearances
1920
Baltimore, Maryland
Other, age 1
Baltimore, Maryland · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Mary M. |
| Relationship to Head | Grand-daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Other, age 11
Baltimore, Maryland · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Mary Marg. |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 21
Baltimore-City-County, Maryland · implied b. ~1919 — 5 household members
| Surname | Kennedy |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Stenographer |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 226 |
| Highest Grade | Hs 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 Mary Kennedy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Frances Kennedy (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Frances Kennedy
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Kennedy
Daughter · 1940 · age 21 · b. ~1919 · Maryland
★ You are viewing this record
Sibling
Daniel Kennedy
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Kennedy
Sibling · 1940 · age 23
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-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-t0627-01533-00121)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lida Lesser | 53 | Head | — | Missouri |
| 42 | Russell A Lesser | 36 | Son | Printing | Maryland |
| 43 | Helen Lesser | 34 | Daughter-in-law | Binder | Maryland |
| 44 | Peter F Weisengoff | 55 | Head | Bartender | Lithuania |
| 45 | Agnes Weisengoff | 51 | Wife | — | Lithuania |
| 46 | Helen Weisengoff | 25 | Daughter | Operator | Maryland |
| 47 | John E Kettering | 25 | Lodger | Welding | New York |
| 48 | Adele Kettering | 21 | Lodger | — | Maryland |
| 49 | John F Jr Kettering | 1 | Lodger | — | Maryland |
| 50 | Leo J Weisengoff | 27 | Head | Production Manager | Maryland |
| 51 | Evelyn N Weisengoff | 24 | Wife | Dictaphone | Maryland |
| 52 | Charles J Molloy | 47 | Head | Accounting | Maryland |
| 53 | Mabel M Molloy | 39 | Wife | — | Maryland |
| 54 | Charles J Jr Molloy | 20 | Son | Inspection | Maryland |
| 55 | Richard Molloy | 18 | Son | — | Maryland |
| 56 | Lawrence Molloy | 17 | Son | — | Maryland |
| 57 | Robert Molloy | 11 | Son | — | Maryland |
| 58 | Alfred Minnick | 36 | Head | Detective | Maryland |
| 59 | Evelyn Minnick | 36 | Wife | — | Maryland |
| 60 | James Minnick | 12 | Son | — | Maryland |
| 61 | Reenna Fahrney | 29 | Lodger | Librarian | Maryland |
| 62 | Gunther Adams | 44 | Lodger | General Helper | Maryland |
| 63 | Elmer S Sr Conners | 50 | Head | Salesman | Maryland |
| 64 | Gettie I Conners | 35 | Wife | Nurse | Virginia |
| 65 | Annie Conner | 74 | Mother | — | Maryland |
| 66 | George K Wilson | 54 | Head | Patrolman | Maryland |
| 67 | Mary S Wilson | 54 | Wife | Teacher | Maryland |
| 68 | George K Jr Wilson | 26 | Son | New Worker | Maryland |
| 69 | M Dorothy Selby | 64 | Sister-in-law | — | Maryland |
| 70 | Catherine E Ames | 55 | Head | — | Pennsylvania |
| 71 | Aillen C Ames | 28 | Daughter | Secretary | Maryland |
| 72 | Patrick B Kearney | 22 | Lodger | Under Clerk | Canada |
| 73 | Frances K Kennedy | 58 | Head | Statistical Clerk | Maryland |
| 74 | Daniel J Kennedy | 25 | Son | Under Clerk | Maryland |
| 75 | Michael S Kennedy | 23 | Son | Mechanic | Maryland |
| 76 | Mary M Kennedy THIS PERSON | 21 | Daughter | Stenographer | Maryland |
| 77 | Mary V Kennedy | 79 | Mother-in-law | — | Maryland |
| 78 | Nicholas P Toomey | 86 | Head | — | Maryland |
| 79 | Cordelia Toomey | 81 | Wife | — | Virginia |
| 80 | Richard Kelley | 45 | Son-in-law | Proprietor | Virginia |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 1 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)