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Mary Larsen — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Larsen across the 1900 and 1910 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 9-person household.
Age 40
b. ~1870
Female
Spouse
Born: Denmark
Married
1910 Census Record Details
| Census Year | 1910 |
| Location | Cook, Illinois |
| Surname | Larsen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Denmark |
| Years Married | 20 |
| Children Born | 7 |
| Children Living | 7 |
| Year of Immigration | 1890 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Township / Ward | Chicago |
| Est. Birth Year | ~1870 |
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.
9 people recorded at the same address in the 1910 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Annie Larsen | Daughter | — | 13 | ~1897 |
| Emma Larsen | Daughter | — | 7 | ~1903 |
| Lars Larsen | Head | — | 45 | ~1865 |
| Peter Larsen | Son | — | 11 | ~1899 |
| Hans Larsen | Son | — | 15 | ~1895 |
| Minnie Larsen | Daughter | — | 9 | ~1901 |
| Mary Larsen | Spouse | — | 40 | ~1870 |
| Mary Larsen | Daughter | — | 17 | ~1893 |
| Lars Larsen | Son | — | 19 | ~1891 |
Census Appearances
1900
Cook, Illinois
Spouse, age 32
Cook, Illinois · implied b. ~1868 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Denmark |
| Birth Month | Nov |
| Birth Year | 1868 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1910
Cook, Illinois
Spouse, age 40
Cook, Illinois · implied b. ~1870 — 9 household members
| Surname | Larsen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Denmark |
| Years Married | 20 |
| Children Born | 7 |
| Children Living | 7 |
| Year of Immigration | 1890 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 2 US Census years (1900 and 1910) in Cook, Illinois, using XGBoost record linkage.
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This person
Anchor record
Mary Larsen
Spouse · 1910 · age 40 · b. ~1870 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1910 US Federal Census — Cook, Illinois
Open full size
1910 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po0021unit:0422)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Hans Hansen | 45 | Head | Farmer | Denmark |
| 52 | Mary Hansen | 40 | Wife | — | Denmark |
| 53 | Hans Hansen | 17 | Son | Farm Laborer | Idaho |
| 54 | Mary Hansen | 15 | Daughter | — | Idaho |
| 55 | Annie Hansen | 13 | Daughter | — | Idaho |
| 56 | Peter Hansen | 11 | Son | — | Idaho |
| 57 | Minnie Hansen | 9 | Daughter | — | Idaho |
| 58 | Emma Hansen | 7 | Daughter | — | Idaho |
| 59 | Lillie Hansen | 5 | Daughter | — | Idaho |
| 60 | Clara Hansen | 2 | Daughter | — | Idaho |
| 61 | Hans Hansen | 35 | Head | Farmer | Denmark |
| 62 | Annie Hansen | 30 | Wife | — | Denmark |
| 63 | Hans Hansen | 9 | Son | — | Idaho |
| 64 | Mary Hansen | 7 | Daughter | — | Idaho |
| 65 | Peter Hansen | 5 | Son | — | Idaho |
| 66 | Annie Hansen | 2 | Daughter | — | Idaho |
| 67 | Jens Jensen | 50 | Head | Farmer | Denmark |
| 68 | Mary Jensen | 45 | Wife | — | Denmark |
| 69 | Jens Jensen | 24 | Son | Farm Laborer | Idaho |
| 70 | Mary Jensen | 22 | Daughter | — | Idaho |
| 71 | Hans Jensen | 20 | Son | Farm Laborer | Idaho |
| 72 | Annie Jensen | 18 | Daughter | — | Idaho |
| 73 | Peter Jensen | 16 | Son | Farm Laborer | Idaho |
| 74 | Minnie Jensen | 14 | Daughter | — | Idaho |
| 75 | Emma Jensen | 12 | Daughter | — | Idaho |
| 76 | Lillie Jensen | 10 | Daughter | — | Idaho |
| 77 | Clara Jensen | 8 | Daughter | — | Idaho |
| 78 | Alice Jensen | 6 | Daughter | — | Idaho |
| 79 | Niels Nielsen | 40 | Head | Farmer | Denmark |
| 80 | Mary Nielsen | 35 | Wife | — | Denmark |
| 81 | Niels Nielsen | 14 | Son | — | Idaho |
| 82 | Mary Nielsen | 12 | Daughter | — | Idaho |
| 83 | Hans Nielsen | 10 | Son | — | Idaho |
| 84 | Annie Nielsen | 8 | Daughter | — | Idaho |
| 85 | Peter Nielsen | 6 | Son | — | Idaho |
| 86 | Minnie Nielsen | 4 | Daughter | — | Idaho |
| 87 | Lars Larsen | 45 | Head | Farmer | Denmark |
| 88 | Mary Larsen THIS PERSON | 40 | Wife | — | Denmark |
| 89 | Lars Larsen | 19 | Son | Farm Laborer | Idaho |
| 90 | Mary Larsen | 17 | Daughter | — | Idaho |
| 91 | Hans Larsen | 15 | Son | Farm Laborer | Idaho |
| 92 | Annie Larsen | 13 | Daughter | — | Idaho |
| 93 | Peter Larsen | 11 | Son | — | Idaho |
| 94 | Minnie Larsen | 9 | Daughter | — | Idaho |
| 95 | Emma Larsen | 7 | Daughter | — | Idaho |
| 96 | Chris Christensen | 35 | Head | Farmer | Denmark |
| 97 | Mary Christensen | 30 | Wife | — | Denmark |
| 98 | Chris Christensen | 11 | Son | — | Idaho |
| 99 | Mary Christensen | 9 | Daughter | — | Idaho |
| 100 | Hans Christensen | 7 | Son | — | Idaho |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1910 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)