ML
Mary Lowery — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Lowery across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 11-person household.
Age 16
b. ~1914
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Lowery |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1914 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Barden Lowery | Son | — | 15 | ~1915 |
| Margaret Lowery | Daughter | — | 9 | ~1921 |
| John Lowery | Son | — | 18 | ~1912 |
| John Lowery | Head | — | 45 | ~1885 |
| Mary Lowery | Spouse | — | 45 | ~1885 |
| James Lowery | Son | — | 11 | ~1919 |
| Harry Holleran | Other | — | 47 | ~1883 |
| Francis Lowery | Son | — | 13 | ~1917 |
| Mary Lowery | Daughter | — | 16 | ~1914 |
| Eileen Lowery | Daughter | — | 2 | ~1928 |
| Martin Flannin | Other | — | 50 | ~1880 |
Census Appearances
1930
Cook, Illinois
Daughter, age 16
Cook, Illinois · implied b. ~1914 — 11 household members
| Surname | Lowery |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 25
Cook-County, Illinois · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lowery |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | H 2 |
| 1935 Residence | Same House |
| 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 Lowery across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lowery
Daughter · 1930 · age 16 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
Eileen Lowery
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Lowery
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lowery
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lowery
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barden Lowery
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Lowery
Sibling · 1930 · age 9
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
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel485:0028)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | James Hamm | 5 | Son | — | Iowa |
| 52 | Margaret Hamm | 3 | Daughter | — | Illinois |
| 53 | Harrie Mclaughlin | 68 | Head | — | England |
| 54 | Edward Mclaughlin | 47 | Son | Bridge Tender | Illinois |
| 55 | Mark Little | 27 | Head | Painter | Illinois |
| 56 | Mary Little | 25 | Wife | — | Illinois |
| 57 | Robert Little | 3 | Son | — | Illinois |
| 58 | Margaret Little | 0 | Daughter | — | Michigan |
| 59 | Peter Johnson | 62 | Head | — | Sweden |
| 60 | Mary Johnson | 59 | Wife | — | Sweden |
| 61 | Ernst Johnson | 37 | Head | Janitor | Sweden |
| 62 | Hely Johnson | 30 | Wife | — | Sweden |
| 63 | Frank Hardwick | 43 | Head | Baker | Yugoslavia |
| 64 | Mary Hardwick | 26 | Wife | — | Pennsylvania |
| 65 | Frances Hardwick | 7 | Son | — | Illinois |
| 66 | Joseph Hardwick | 6 | Son | — | Illinois |
| 67 | Paul Hardwick | 4 | Son | — | Illinois |
| 68 | Thomas Hardwick | 3 | Son | — | Illinois |
| 69 | Harry Haynes | 31 | Head | Shoemaker | Missouri |
| 70 | Bessy Haynes | 24 | Wife | — | Kansas |
| 71 | John Lowery | 45 | Head | Teamster | Irish Free State |
| 72 | Mary Lowery | 45 | Wife | — | Irish Free State |
| 73 | John Jr Lowery | 18 | Son | Draughtsman | Illinois |
| 74 | Mary Lowery THIS PERSON | 16 | Daughter | — | Illinois |
| 75 | Barden Lowery | 15 | Son | — | Illinois |
| 76 | Francis Lowery | 13 | Son | — | Illinois |
| 77 | James Lowery | 11 | Son | — | Illinois |
| 78 | Margaret Lowery | 9 | Daughter | — | Illinois |
| 79 | Eileen Lowery | 2 | Daughter | — | Illinois |
| 80 | Martin Flannin | 50 | Roomer | Labourer | Irish Free State |
| 81 | Harry Holleran | 47 | Roomer | Draughtsman | Irish Free State |
| 82 | John S Lannon | 47 | Head | Genl Laborer | Irish Free State |
| 83 | Bridget Lannon | 44 | Wife | — | Irish Free State |
| 84 | Mary E Lannon | 14 | Daughter | — | Illinois |
| 85 | Alice G Lannon | 12 | Daughter | — | Illinois |
| 86 | John J Lannon | 11 | Son | — | Illinois |
| 87 | James F Lannon | 9 | Son | — | Illinois |
| 88 | Patrick J Lannon | 8 | Son | — | Illinois |
| 89 | Genevieve Lannon | 6 | Daughter | — | Illinois |
| 90 | Peter H Lannon | 4 | Son | — | Illinois |
| 91 | Margaret Lannon | 2 | Daughter | — | Illinois |
| 92 | Lawrence Lannon | 1 | Son | — | Illinois |
| 93 | Thomas Hennigan | 38 | Head | Freight Handler | Irish Free State |
| 94 | Mary Hennigan | 37 | Wife | — | Irish Free State |
| 95 | Rita Hennigan | 11 | Daughter | — | Illinois |
| 96 | Mary J Hennigan | 9 | Daughter | — | Illinois |
| 97 | Thomas J Hennigan | 8 | Son | — | Illinois |
| 98 | Martin O'Brian | 28 | Roomer | Blacksmith | Irish Free State |
| 99 | John Coyner | 21 | Roomer | Freight Handler | Irish Free State |
| 100 | Thomas Holleran | 21 | Roomer | Freight Handler | Irish Free State |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)