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Mary Lund — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Lund across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 5-person household.
Age 0
b. ~1930
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Lund |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1930 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Hattie Lund | Spouse | — | 33 | ~1897 |
| Mary Lund | Daughter | — | ~1930 | |
| William Lund | Son | — | 1 | ~1929 |
| John Lund | Head | — | 40 | ~1890 |
| John Lund | Son | — | 3 | ~1927 |
Census Appearances
1930
Cook, Illinois
Daughter, age
Cook, Illinois · implied b. ~1930 — 5 household members
| Surname | Lund |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 10
Cook-County, Illinois · implied b. ~1930 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lind |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 4 |
| 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 Lund across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lund
Daughter · 1930 · age 0 · b. ~1930 · Illinois
★ You are viewing this record
Sibling
John Lund
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Lund
Sibling · 1930 · age 1
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:illinoiscensus00reel479:0813)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | — | 20 | — | — | — |
| 52 | — | 18 | — | — | — |
| 53 | — | 21 | — | — | — |
| 54 | — | 19 | — | — | — |
| 55 | — | 17 | — | — | — |
| 56 | — | 13 | — | — | — |
| 57 | Fink | 63 | Head | — | Illinois |
| 58 | Fink | 64 | Wife | — | Illinois |
| 59 | Brooke | 41 | Head | Broker | Illinois |
| 60 | Brooke | 11 | Son | — | Illinois |
| 61 | Brooke | 11 | Son | — | Illinois |
| 62 | Brooke | 11 | Son | — | Illinois |
| 63 | Brooke | 11 | Son | — | Illinois |
| 64 | Konstanty Khurr | 40 | Head | Finisher | Poland |
| 65 | Yvonne Khurr | 29 | Wife | — | Poland |
| 66 | Katy Bizon | 69 | Mother-in-law | — | Poland |
| 67 | John Janoff | 34 | Head | Tailor | Poland |
| 68 | Hattie Janoff | 30 | Wife | — | Poland |
| 69 | Gustaf Ross | 38 | Head | Proprietor | Sweden |
| 70 | Anna Ross | 35 | Wife | — | Sweden |
| 71 | Margaret Ross | 10 | Daughter | — | Illinois |
| 72 | Shirley Ross | 7 | Daughter | — | Illinois |
| 73 | Axel Lund | 34 | Head | Clerk | Wisconsin |
| 74 | Anna Lund | 61 | Mother | — | Sweden |
| 75 | Hilda Lund | 31 | Sister | — | Sweden |
| 76 | Arthur Lund | 28 | Brother | Salesman | Germany |
| 77 | Elsa Lund | 17 | Sister | — | Illinois |
| 78 | Walter Lund | 14 | Brother | — | Germany |
| 79 | Herbert Lund | 11 | Brother | — | Illinois |
| 80 | John Lund | 40 | Head | Restaurant | Germany |
| 81 | Hattie Lund | 33 | Wife | — | Germany |
| 82 | John Lund | 3 | Son | Carpenter | Illinois |
| 83 | William Lund | 1 | Son | — | Illinois |
| 84 | Mary Lund THIS PERSON | 0 | Daughter | — | Illinois |
| 85 | John Hart | 34 | Head | Master Mechanic | Illinois |
| 86 | Hattie Hart | 31 | Wife | — | Illinois |
| 87 | John Hart | 11 | Son | — | Illinois |
| 88 | William Hart | 9 | Son | — | Illinois |
| 89 | Mary Hart | 7 | Daughter | — | Illinois |
| 90 | William Hart | 51 | Head | Shipping Clerk | Germany |
| 91 | Hattie Hart | 50 | Wife | — | Illinois |
| 92 | John Hart | 12 | Son | — | Germany |
| 93 | William Hart | 43 | Head | Upholsterer | Poland |
| 94 | Hattie Hart | 42 | Wife | — | Poland |
| 95 | John Hart | 17 | Son | Stenographer | Illinois |
| 96 | William Hart | 15 | Son | — | Illinois |
| 97 | Mary Hart | 13 | Daughter | — | Illinois |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)