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Mary Lowry — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Lowry across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Lowry |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1926 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Steven Lowry | Head | — | 42 | ~1898 |
| William Lowry | Son | — | 8 | ~1932 |
| Bernard Lowry | Son | — | 16 | ~1924 |
| Theresa Lowry | Daughter | — | 2 | ~1938 |
| Mary Lowry | Daughter | — | 14 | ~1926 |
| Anna Lowry | Daughter | — | 12 | ~1928 |
| Bertha Lowry | Spouse | — | 34 | ~1906 |
| Kenneth Lowry | Son | — | 5 | ~1935 |
| Helena Lowry | Daughter | — | 3 | ~1937 |
| Bertha Lowry | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 4
Baltimore, Maryland · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lowry |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| 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 14
Baltimore-City-County, Maryland · implied b. ~1926 — 10 household members
| Surname | Lowry |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Industry | 0 |
| Highest Grade | No 7 |
| 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 Mary Lowry across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lowry
Daughter · 1940 · age 14 · b. ~1926 · Maryland
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Sibling
Theresa Lowry
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Lowry
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helena Lowry
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Lowry
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Lowry
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Lowry
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Lowry
Sibling · 1940 · age 5
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
39 people indexed on this census page (nara:1940:m-t0627-01535-00794)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Rowan | 34 | Head | Rigger Helper | Maryland |
| 2 | Vera Rowan | 15 | Daughter | — | Maryland |
| 3 | Catherine Rowan | 14 | Daughter | — | Maryland |
| 4 | Thomas Rowan | 11 | Son | — | Maryland |
| 5 | Patricia Rowan | 9 | Daughter | — | Maryland |
| 6 | Paul Rowan | 7 | Son | — | Maryland |
| 7 | Mattie Stewart | 53 | Mother | Housework | Maryland |
| 8 | Charles Norfolk | 33 | Head | Roofer | Maryland |
| 9 | Harry O'Neil | 41 | Head | Pile Driver | Maryland |
| 10 | Margaret O'Neil | 36 | Wife | — | Maryland |
| 11 | Elizabeth O'Neil | 9 | Daughter | — | Maryland |
| 12 | Catherine O'Neil | 6 | Daughter | — | Maryland |
| 13 | Mary Ann O'Neil | 5 | Daughter | — | Maryland |
| 14 | Eileen O'Neil | 2 | Daughter | — | Maryland |
| 15 | Mary O'Neil | 78 | Mother | — | Maryland |
| 16 | Charles Harthausen | 22 | Head | Truck Driver | Maryland |
| 17 | Rosalie Harthausen | 21 | Wife | — | Maryland |
| 18 | Rosalie Harthausen | 3 | Daughter | — | Maryland |
| 19 | Steven Lowry | 42 | Head | — | Maryland |
| 20 | Bertha Lowry | 34 | Wife | — | Maryland |
| 21 | Bernard Lowry | 16 | Son | — | Maryland |
| 22 | Mary Lowry THIS PERSON | 14 | Daughter | — | Maryland |
| 23 | Anna Lowry | 12 | Daughter | — | Maryland |
| 24 | Bertha Lowry | 9 | Daughter | — | Maryland |
| 25 | William Lowry | 8 | Son | — | Maryland |
| 26 | Kenneth Lowry | 5 | Son | — | Maryland |
| 27 | Helena Lowry | 3 | Daughter | — | Maryland |
| 28 | Theresa Lowry | 2 | Daughter | — | Maryland |
| 29 | Edward Wheatley | 48 | Head | Carpenter | Maryland |
| 30 | Gladys Wheatley | 51 | Wife | — | Maryland |
| 31 | Dorothy Wheatley | 20 | Daughter | Machine Operator | Maryland |
| 32 | Loretta Wheatley | 18 | Daughter | — | Maryland |
| 33 | Raymond Wheatley | 15 | Son | — | Maryland |
| 34 | John Wheatley | 13 | Son | — | Maryland |
| 35 | Eldridge Bell | 33 | Son-in-law | Carpenter Helper | Maryland |
| 36 | Lillian Bell | 24 | Daughter | — | Maryland |
| 37 | Eldridge Bell | 6 | Grandson | — | Maryland |
| 38 | Shirley Bell | 4 | Granddaughter | — | Maryland |
| 39 | Anna Doyle | 7 | Granddaughter | — | 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)