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Mary Larsen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Larsen across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 3-person household.
Age 53
b. ~1877
Female
Spouse
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Larsen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 18 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1877 |
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 |
|---|---|---|---|---|
| William Larsen | Son | — | 27 | ~1903 |
| William Larsen | Head | — | 51 | ~1879 |
| Mary Larsen | Spouse | — | 53 | ~1877 |
Census Appearances
1920
Cook, Illinois
Other, age 41
Cook, Illinois · implied b. ~1879 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | Mary |
| Relationship to Head | Aunt |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Spouse, age 53
Cook, Illinois · implied b. ~1877 — 3 household members
| Surname | Larsen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 18 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Spouse, age 62
Cook-County, Illinois · implied b. ~1878 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | S 8 |
| 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 Larsen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Larsen
Spouse · 1930 · age 53 · b. ~1877 · 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:illinoiscensus00reel453:0226)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Pauline Foley | 22 | Wife | — | Illinois |
| 52 | Ann Foley | 19 | Daughter | Forewoman | Illinois |
| 53 | Agnes Foley | 13 | Daughter | — | Illinois |
| 54 | John Muley | 26 | Head | Truck Driver | Illinois |
| 55 | Margaret Muley | 23 | Wife | — | Illinois |
| 56 | Robert Muley | 5 | Son | — | Illinois |
| 57 | Richard Muley | 3 | Son | — | Illinois |
| 58 | James Muley | 1 | Son | — | Illinois |
| 59 | Edward Muley | 0 | Son | — | Illinois |
| 60 | Axel Larsen | 34 | Head | Operator | Sweden |
| 61 | Anna Larsen | 34 | Wife | — | Sweden |
| 62 | Lillian Larsen | 6 | Daughter | — | Illinois |
| 63 | Elmer Larsen | 4 | Son | — | Illinois |
| 64 | Margaret Larsen | 2 | Daughter | — | Illinois |
| 65 | Arthur Brink | 26 | Head | Grinder | Illinois |
| 66 | Catherine Brink | 25 | Wife | Assembler | Illinois |
| 67 | Sophie Pangowski | 30 | Head | Inspector | Poland |
| 68 | Alice Pangowski | 2 | Daughter | — | Illinois |
| 69 | Albert Pangowski | 17 | Brother | Shop Work | Illinois |
| 70 | Bernice Vailaitis | 18 | Boarder | Typist | Illinois |
| 71 | Victor Vailaitis | 18 | Boarder | Shop Work | Illinois |
| 72 | George Duncan | 37 | Head | Supervisor | Minnesota |
| 73 | Alice Duncan | 32 | Wife | Conductor | Iowa |
| 74 | Margaret Duncan | 13 | Daughter | — | Illinois |
| 75 | Jean Duncan | 12 | Daughter | — | Illinois |
| 76 | William Covert | 32 | Head | Freight Man | Illinois |
| 77 | Helen Covert | 25 | Wife | Forewoman | Germany |
| 78 | Frank Nestel | 52 | Head | Officer | Illinois |
| 79 | Mary Nestel | 54 | Wife | Cabinet Maker | Czecho-Slovak |
| 80 | Mary Nestel | 25 | Daughter | — | Illinois |
| 81 | Emil Turkson | 35 | Head | Chauffeur | Illinois |
| 82 | Sophie Turkson | 44 | Wife | — | Czecho-Slovak |
| 83 | Carl Seifert | 58 | Head | — | Germany |
| 84 | Mary Seifert | 63 | Wife | — | Germany |
| 85 | Harold Seifert | 22 | Son | Service Man | Illinois |
| 86 | Rose Seifert | 28 | Boarder | Stenographer | Germany |
| 87 | Joseph Price | 44 | Head | Salesman | England |
| 88 | Elizabeth Price | 43 | Wife | — | England |
| 89 | William Price | 13 | Son | — | England |
| 90 | William Swan | 50 | Head | Machinist | Illinois |
| 91 | Raymond Larsen | 22 | Boarder | Machinist | Wisconsin |
| 92 | William Larsen | 21 | Boarder | Machinist | Illinois |
| 93 | William Larsen | 51 | Head | Conductor | Illinois |
| 94 | Mary Larsen THIS PERSON | 53 | Wife | — | Illinois |
| 95 | William Larsen | 27 | Son | — | Illinois |
| 96 | Mary Larsen | 67 | Head | — | Germany |
| 97 | Edward Larsen | 36 | Son | Operator | Illinois |
| 98 | Arthur Larsen | 33 | Son | Driver | Illinois |
| 99 | George Larsen | 31 | Son | — | Illinois |
| 100 | Bernice Larsen | 28 | Daughter | — | Illinois |
Related Census Records
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)