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Mary Kennedy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this Mary Kennedy across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents Joseph & Bruce — first a daughter (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Kennedy |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Catonsville-Sudbrook (pt) |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Catonsvillesudbrook Pt |
| Est. Birth Year | ~1913 |
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 | — | 27 | ~1913 |
| Margaret Kennedy | Daughter | — | 24 | ~1916 |
| Joseph Kennedy | Head | — | 64 | ~1876 |
| Jack Kennedy | Son | — | 21 | ~1919 |
| Mary Kennedy | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 6
Baltimore, Maryland · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
Daughter, age 16
Baltimore, Maryland · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Daughter, age 27
Baltimore-County, Maryland · implied b. ~1913 — 5 household members
| Surname | Kennedy |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Catonsville-Sudbrook (pt) |
| 1935 Residence (County) | Baltimore |
| 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 Mary Kennedy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Kennedy (~0.92 confidence) and father Bruce Kennedy (~0.92 confidence) and mother Amelia Kennedy (~0.92 confidence) and mother Amelia Kennedy (~0.92 confidence) and mother Mary Kennedy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Kennedy
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Bruce Kennedy
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Amelia Kennedy
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Amelia Kennedy
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Mary Kennedy
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Kennedy
Daughter · 1940 · age 27 · b. ~1913 · Maryland
★ You are viewing this record
Sibling
Margaret Kennedy
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Kennedy
Sibling · 1940 · age 21
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-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01503-00939)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Richard Taylor | 29 | Head | Fireman | Maryland |
| 42 | Lois Taylor | 23 | Wife | — | Maryland |
| 43 | Nancy Lee Taylor | 3 | Daughter | — | Maryland |
| 44 | Charles T. Shipley | 59 | Head | Chauffeur | Maryland |
| 45 | Emma N. Shipley | 45 | Wife | — | Maryland |
| 46 | Laura M. Garnish | 74 | Mother-in-law | — | Maryland |
| 47 | Willetta Mccarthy | 61 | Head | — | Maryland |
| 48 | Arthur E. Callis | 31 | Head | Filling Station | Maryland |
| 49 | Frieda Callis | 31 | Wife | — | Maryland |
| 50 | Beverly Callis | 7 | Daughter | — | Maryland |
| 51 | Arthur P. Callis | 4 | Son | — | Maryland |
| 52 | Thomas L. Callis | 1 | Son | — | Maryland |
| 53 | H. Eugene Walters | 55 | Head | Gold Finisher | Maryland |
| 54 | Eva M. Walters | 50 | Wife | — | Maryland |
| 55 | Stansfield Walters | 28 | Son | Carpenter Foreman | Maryland |
| 56 | William M. Walters | 18 | Son | — | Maryland |
| 57 | William T. Boyd | 69 | Head | Salesman | Virginia |
| 58 | Mary V. Boyd | 71 | Wife | — | Maryland |
| 59 | Walter S. Boyd | 31 | Head | Attendant | Maryland |
| 60 | Kathleen Boyd | 29 | Wife | — | Maryland |
| 61 | Richard M. Boyd | 2 | Son | — | Maryland |
| 62 | Walter S. Jr. Boyd | 0 | Son | — | Maryland |
| 63 | William J. Kennedy | 72 | Head | Florist | Maryland |
| 64 | Nellie Kennedy | 73 | Sister | — | Maryland |
| 65 | Alice R. Kennedy | 60 | Sister | — | Maryland |
| 66 | Joseph A. Kennedy | 64 | Head | Janitor | Maryland |
| 67 | Mary E. Kennedy | 51 | Wife | — | Maryland |
| 68 | Mary H. Kennedy THIS PERSON | 27 | Daughter | — | Maryland |
| 69 | Margaret E. Kennedy | 24 | Daughter | — | Maryland |
| 70 | Jack J. Kennedy | 21 | Son | — | Maryland |
| 71 | Thomas A. O'Neill | 57 | Head | Electric Motorman | Maryland |
| 72 | Mary O'Neill | 57 | Sister | Manicurist | Maryland |
| 73 | Catherine O'Neill | 54 | Sister | — | Maryland |
| 74 | Frank Williams | 27 | Head | Fireman | Maryland |
| 75 | Edith V. Williams | 29 | Wife | — | Maryland |
| 76 | Betty E. Williams | 0 | Daughter | — | Maryland |
| 77 | Blanche Lorsinger | 59 | Head | Insurance Clerk | Maryland |
| 78 | Frank E. Wilderman | 55 | Head | Store Operator | Maryland |
| 79 | Fannie B. Wilderman | 59 | Wife | — | Maryland |
| 80 | Thomas E. Wilderman | 21 | Son | Apprentice Machinist | Maryland |
Related Census Records
Pedigree Summary
Mary + 2 siblings
Gen 1 · 5 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)