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Mary Lunn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Lunn across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1876), then head of a 3-person household.
Age 54
b. ~1876
Female
Head
Born: Germany
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Lunn |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Widowed |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 20 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 7500 |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1876 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lunn | Head | — | 54 | ~1876 |
| William Lunn | Son | — | 20 | ~1910 |
| Teresa Lunn | Daughter | — | 18 | ~1912 |
Census Appearances
1930
Cook, Illinois
Head, age 54
Cook, Illinois · implied b. ~1876 — 3 household members
| Surname | Lunn |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Widowed |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 20 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 7500 |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Cook-County, Illinois
Head, age 65
Cook-County, Illinois · implied b. ~1875
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Lenz |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Germany |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | G 6 |
| 1935 Residence | Same house |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Lunn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Lunn
Head · 1930 · age 54 · b. ~1876 · Illinois
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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:illinoiscensus00reel437:0738)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Finnerty | 31 | Head | — | Illinois |
| 2 | Daniel Finnerty | 5 | Son | — | Illinois |
| 3 | Joseph Finnerty | 2 | Son | — | Illinois |
| 4 | Walter Ames | 55 | Head | Painter | New York |
| 5 | Julia Ames | 44 | Wife | — | Illinois |
| 6 | Robert Ames | 7 | Son | Sailor | Illinois |
| 7 | Celesta Elkins | 73 | Mother-in-law | — | Indiana |
| 8 | Mary Lunn THIS PERSON | 54 | Head | — | Germany |
| 9 | William Lunn | 20 | Son | Clerk | Illinois |
| 10 | Teresa Lunn | 18 | Daughter | Typist | Illinois |
| 11 | William Kennedy | 43 | Head | Laborer | Illinois |
| 12 | Elizabeth Kennedy | 41 | Wife | — | Illinois |
| 13 | Dorothy Kennedy | 19 | Daughter | Operator | Illinois |
| 14 | William Kennedy | 17 | Son | Messenger | Illinois |
| 15 | Eleanore Kennedy | 14 | Daughter | — | Illinois |
| 16 | Bridget Wardle | 60 | Head | — | Ireland |
| 17 | Joseph Wardle | 34 | Son | Carpenter | Illinois |
| 18 | Ella May Wardle | 25 | Daughter | Clerk | Illinois |
| 19 | James Kirby | 70 | Brother | — | Ireland |
| 20 | Delia Cook | 58 | Head | — | Ireland |
| 21 | John Cook | 27 | Boarder | Conductor | Ireland |
| 22 | William Cook | 24 | Boarder | Clerk | Ireland |
| 23 | John Ahearn | 26 | Boarder | Laborer | Ireland |
| 24 | Michael Scanlon | 27 | Boarder | Laborer | Ireland |
| 25 | Richard Doherty | 20 | Boarder | Laborer | Ireland |
| 26 | Anna Powers | 21 | Telephone Co | Operator | Illinois |
| 27 | John Dey | 28 | Head | Captain | Illinois |
| 28 | Georgia Dey | 20 | Wife | Operator | California |
| 29 | John Hutchison | 28 | Head | Storekeeper | Austria |
| 30 | Jennie Hutchison | 27 | Wife | — | Czechoslovakia |
| 31 | Martin White | 70 | Head | Laborer | Illinois |
| 32 | Julia White | 71 | Wife | — | Illinois |
| 33 | Joseph White | 28 | Son | Clerk | Illinois |
| 34 | Anna Mae White | 24 | Daughter | School Teacher | Illinois |
| 35 | Walter Vincent | 37 | Head | Laborer | Illinois |
| 36 | Nellie Vincent | 30 | Wife | — | Ireland |
| 37 | Julia M. Vincent | 4 | Daughter | — | Illinois |
| 38 | Walter Jr. Vincent | 1 | Son | — | Illinois |
| 39 | Catherine Finn | 20 | Cousin | Laborer | Ireland |
| 40 | John Finn | 22 | Cousin | Laborer | Ireland |
| 41 | John Stokes | 50 | Head | — | Ireland |
| 42 | Mary Stokes | 27 | Daughter | Laborer | Illinois |
| 43 | John Jr. Stokes | 18 | Son | Milk Driver | Illinois |
| 44 | Thomas Costello | 25 | Head | — | Illinois |
| 45 | Anne Costello | 28 | Wife | — | Illinois |
| 46 | Mary Costello | 2 | Daughter | Laborer | Illinois |
| 47 | Michael Martin | 50 | Head | Clerk | Ireland |
| 48 | Mary Martin | 18 | Daughter | — | Illinois |
| 49 | Anna Martin | 16 | Daughter | — | Illinois |
| 50 | Catherine Nolan | 66 | Mother | — | Ireland |
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)