MK
Mary Kenny — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Kenny across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Kenny |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1924 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Sophie Kenny | Daughter | — | 15 | ~1925 |
| Mary Kenny | Daughter | — | 16 | ~1924 |
| John Kenny | Son | — | 22 | ~1918 |
| Joseph Kenny | Son | — | 24 | ~1916 |
| Martin Kenny | Son | — | 19 | ~1921 |
| Julia Kenny | Head | — | 40 | ~1900 |
| Julia Kenny | Daughter | — | 18 | ~1922 |
| Alice Kenny | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 6
Baltimore, Maryland · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kenney |
| 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 |
1940
Baltimore-City-County, Maryland
Daughter, age 16
Baltimore-City-County, Maryland · implied b. ~1924 — 8 household members
| Surname | Kenny |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Class of Worker | 0 |
| 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 Mary Kenny across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kenny
Daughter · 1940 · age 16 · b. ~1924 · Maryland
★ You are viewing this record
Sibling
Alice Kenny
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kenny
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Kenny
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Kenny
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sophie Kenny
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Kenny
Sibling · 1940 · age 18
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-t0627-01525-00343)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charlotte Thomas | 28 | Wife | Cashier | New York |
| 42 | W. Norman Clayland | 39 | Head | Accountant | Maryland |
| 43 | Elizabeth Clayland | 31 | Wife | Hairdresser | Maryland |
| 44 | Samuel Switchgall | 29 | Head | Proprietor | Maryland |
| 45 | Lillian Switchgall | 27 | Wife | — | Maryland |
| 46 | Ernest Wongus | 41 | Head | Janitor | Maryland |
| 47 | Frederick Treichler | 46 | Head | Manager | Switzerland |
| 48 | Rose Treichler | 34 | Wife | — | Maryland |
| 49 | Edward Gay | 39 | Head | Salesman | New York |
| 50 | Helen Gay | 46 | Wife | — | Pennsylvania |
| 51 | Yancey Garner | 58 | Head | Marine Machinist | Virginia |
| 52 | Ruth Garner | 44 | Wife | — | Maryland |
| 53 | Frank A. Sargable | 68 | Head | Carpenter | Maryland |
| 54 | Mary Sargable | 63 | Wife | — | Maryland |
| 55 | Earl Austin | 42 | Head | Rate Clerk | W. Virginia |
| 56 | Mary Austin | 38 | Wife | Saleslady | Pennsylvania |
| 57 | Elaine Austin | 18 | Daughter | — | Maryland |
| 58 | Earl Jr. Austin | 17 | Son | — | Maryland |
| 59 | Julia Kenny | 40 | Head | — | Maryland |
| 60 | Joseph (Ab) Kenny | 24 | Son | — | Maryland |
| 61 | John Kenny | 22 | Son | Steel Worker | Maryland |
| 62 | Alice Kenny | 21 | Daughter | Typist | Maryland |
| 63 | Martin Kenny | 19 | Son | — | Maryland |
| 64 | Julia (Ab) Kenny | 18 | Daughter | — | Maryland |
| 65 | Mary Jane Kenny THIS PERSON | 16 | Daughter | — | Maryland |
| 66 | Sophie Kenny | 15 | Daughter | — | Maryland |
| 67 | Dennis E. Noble | 45 | Head | Machinist | Maryland |
| 68 | Evelyn B. Hyder | 42 | Head | Tax Clerk | Maryland |
| 69 | James Hyder | 21 | Son | Keeper Assistant | Maryland |
| 70 | Gertrude Hyder | 20 | Daughter | Line Keeper | Maryland |
| 71 | Edith Holmes | 66 | Mother | — | Maryland |
| 72 | James Wright | 65 | Head | Fireman | Scotland |
| 73 | Mary E. Wright | 65 | Wife | — | Maryland |
| 74 | Genevieve Carner | 35 | Daughter | Trimmer | Maryland |
| 75 | Mary Ellen Carner | 14 | Daughter | — | Maryland |
| 76 | Henry Grimes | 56 | Head | Chauffeur | Maryland |
| 77 | Margaret Grimes | 49 | Wife | — | Maryland |
| 78 | Laura Grimes | 12 | Daughter | — | Maryland |
| 79 | Otto Schrader | 51 | Lodger | Carpenter | Maryland |
| 80 | Thomas Morley | 40 | Head | Salesman | 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)