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Mary Lowry — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Lowry across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 6-person household.
Age 14
b. ~1926
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Lowry |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | H 7 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mabel Lowry | Daughter | — | 11 | ~1929 |
| James Lowry | Son | — | 13 | ~1927 |
| Thomas Lowry | Son | — | 6 | ~1934 |
| William Lowry | Son | — | 17 | ~1923 |
| Violet Lowry | Head | — | 37 | ~1903 |
| Mary Lowry | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Cook, Illinois
Daughter, age 3
Cook, Illinois · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lowrey |
| Given Name | Mary Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 14
Cook-County, Illinois · implied b. ~1926 — 6 household members
| Surname | Lowry |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | H 7 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 · Illinois
★ You are viewing this record
Sibling
Mabel Lowry
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lowry
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Lowry
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lowry
Sibling · 1940 · age 13
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00984-00100)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adill G. Berg | 53 | Head | Steel Salesman | Illinois |
| 2 | Rose Berg | 53 | Wife | — | Michigan |
| 3 | Alfred Lauerman | 42 | Head | Tool & Die Maker | Germany |
| 4 | Wally Lauerman | 38 | Wife | — | Germany |
| 5 | Thomas Lauerman | 5 | Son | — | Illinois |
| 6 | Leonard Gunison | 48 | Head | Paperhanger | Russia |
| 7 | Diana Gunison | 49 | Wife | Millinery | Russia |
| 8 | George Galetti | 49 | Head | — | Illinois |
| 9 | Joseph Galetti | 52 | Head | Clerk | Illinois |
| 10 | Margaret Galetti | 34 | Wife | — | Illinois |
| 11 | Clarence Galetti | 19 | Son | Packer | Illinois |
| 12 | Joseph Galetti | 13 | Son | — | Illinois |
| 13 | George Galetti | 11 | Son | — | Illinois |
| 14 | Minnie Isaac | 75 | Mother-in-law | — | Germany |
| 15 | Charles Goldman | 47 | Head | Clothing | Poland |
| 16 | Tillie Goldman | 47 | Wife | — | Russia |
| 17 | Thorvald Jensen | 40 | Head | Retail Tailoring | Denmark |
| 18 | Anna Jensen | 43 | Wife | Cook | Denmark |
| 19 | Henry Jensen | 19 | Son | Office Clerk | Denmark |
| 20 | Edith Jensen | 17 | Daughter | Cashier | Denmark |
| 21 | Carl Hohnmeister | 35 | Head | Store Clerk | Illinois |
| 22 | Sophia Hohnmeister | 38 | Sister | Store Clerk | Illinois |
| 23 | Violet Lowry | 37 | Head | — | Wisconsin |
| 24 | William Lowry | 17 | Son | — | Illinois |
| 25 | Mary M. Lowry THIS PERSON | 14 | Daughter | — | Illinois |
| 26 | James Lowry | 13 | Son | — | Illinois |
| 27 | Mabel Lowry | 11 | Daughter | — | Illinois |
| 28 | Thomas Lowry | 6 | Son | — | Illinois |
| 29 | Thomas Ryan | 29 | Head | 18 | Illinois |
| 30 | Irene Ryan | 30 | Wife | Cook | Illinois |
| 31 | Richard Ryan | 8 | Son | — | Illinois |
| 32 | Doris Ryan | 6 | Daughter | — | Illinois |
| 33 | Gerald Ryan | 5 | Son | — | Illinois |
| 34 | Dudley Chappell | 38 | Lodger | Machinist | Arkansas |
| 35 | Mary Chappell | 35 | Lodger | Packer | Illinois |
| 36 | Fred Smith | 60 | Lodger | Stat. Engineer | Illinois |
| 37 | Mildred Krall | 23 | Lodger | Factory Helper | Michigan |
| 38 | Bernard Falvey | 72 | Lodger | 26 | Illinois |
| 39 | Bettie Falvey | 28 | Lodger | Factory Helper | Illinois |
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)