MN
Mary Nichols — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Knox, Illinois
Our Model Tree links this Mary Nichols across the 1920 and 1930 US Censuses in Knox, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 19-person household.
Age 20
b. ~1910
Female
Daughter
Born: North Dakota
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Knox, Illinois |
| Surname | Nichols |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Knox Township Pt Of |
| Est. Birth Year | ~1910 |
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.
19 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Phyllis Wilson | Daughter | — | 1 | ~1929 |
| Mary Nichols | Daughter | — | 20 | ~1910 |
| Irene Nichols | Daughter | — | 13 | ~1917 |
| Eva Nichols | Daughter | — | 18 | ~1912 |
| Louise Nichols | Daughter | — | 11 | ~1919 |
| Paul Wilson | Head | — | 36 | ~1894 |
| George Nichols | Other | — | 54 | ~1876 |
| William Burtnett | Other | — | 78 | ~1852 |
| James Courter | Other | — | 43 | ~1887 |
| Lawrence Nichols | Son | — | 26 | ~1904 |
| Frederick Nichols | Son | — | 22 | ~1908 |
| Ray Nichols | Son | — | 27 | ~1903 |
| Edward Nichols | Son | — | 24 | ~1906 |
| Donald Wilson | Son | — | 3 | ~1927 |
| Lewis Nichols | Son | — | 6 | ~1924 |
| Paul Nichols | Son | — | 9 | ~1921 |
| Florence Courter | Spouse | — | 39 | ~1891 |
| Nora Wilson | Spouse | — | 26 | ~1904 |
| Katie Nichols | Spouse | — | 47 | ~1883 |
Census Appearances
1920
Knox, Illinois
Daughter, age 10
Knox, Illinois · implied b. ~1910 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Knox, Illinois
Daughter, age 20
Knox, Illinois · implied b. ~1910 — 19 household members
| Surname | Nichols |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Nichols across 2 US Census years (1920 and 1930) in Knox, Illinois, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Nichols
Daughter · 1930 · age 20 · b. ~1910 · Illinois
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Sibling
Louise Nichols
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Nichols
Sibling · 1930 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Nichols
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Wilson
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Nichols
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Wilson
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Nichols
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Nichols
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frederick Nichols
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lewis Nichols
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Nichols
Sibling · 1930 · age 13
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 — Knox, Illinois
Open full size
1930 US Federal Census — Knox, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel527:0931)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Everette L Lindsey | 20 | Head | Farm Laborer | Illinois |
| 2 | Margaret L Lindsey | 17 | Daughter | — | Illinois |
| 3 | Mary Alice Lindsey | 14 | Daughter | — | Illinois |
| 4 | John T Lindsey | 84 | Father | — | Illinois |
| 5 | Joseph J Barth | 56 | Head | Farmer | Indiana |
| 6 | Minnie M Barth | 50 | Wife | — | Illinois |
| 7 | Robert L Young | 66 | Head | — | Illinois |
| 8 | Emma F Young | 59 | Wife | — | Illinois |
| 9 | John Mcbeth | 70 | Head | Farmer | Pennsylvania |
| 10 | Ida M Mcbeth | 64 | Wife | — | Illinois |
| 11 | Clyde R Mcbeth | 35 | Son | Plumber | Illinois |
| 12 | Forest S Mcbeth | 27 | Son | Farm Laborer | Illinois |
| 13 | Arthur T Holloway | 31 | Head | Mechanic | Illinois |
| 14 | Mildred L Holloway | 25 | Wife | — | Illinois |
| 15 | Willard D Holloway | 4 | Son | — | Illinois |
| 16 | Ray Dale Holloway | 3 | Son | — | Illinois |
| 17 | Lois L Holloway | 1 | Daughter | — | Illinois |
| 18 | Raymond H Patton | 39 | Head | Farmer | Illinois |
| 19 | Maud B Patton | 38 | Wife | — | Illinois |
| 20 | Marion W Patton | 15 | Son | — | Illinois |
| 21 | Lila A Patton | 8 | Daughter | — | Illinois |
| 22 | Harry E Bruce | 61 | Head | Farmer | Pennsylvania |
| 23 | Clara E Bruce | 60 | Wife | — | Illinois |
| 24 | Floy E Bruce | 19 | Daughter | — | Illinois |
| 25 | Vera Zelar | 23 | Boarder | Teacher | Illinois |
| 26 | Ray E Evans | 35 | Head | Farmer | Illinois |
| 27 | Rhia J Evans | 36 | Wife | Teacher | Iowa |
| 28 | Otto Rosine | 53 | Head | Farmer | Sweden |
| 29 | Artha Rosine | 47 | Wife | — | Sweden |
| 30 | Arthur S Rosine | 25 | Son | Farm Laborer | Illinois |
| 31 | Nels O Rosine | 23 | Son | Truck Driver | Illinois |
| 32 | Paul E Wilson | 36 | Head | Farmer | Ohio |
| 33 | Nora E Wilson | 26 | Wife | — | Michigan |
| 34 | Donald P Wilson | 3 | Son | — | Illinois |
| 35 | Phyllis L Wilson | 1 | Daughter | — | Illinois |
| 36 | James K Courter | 43 | R | Farmer | Pennsylvania |
| 37 | Florence M Courter | 39 | Wife | — | Illinois |
| 38 | William T Burtnett | 78 | Father-in-law | — | Pennsylvania |
| 39 | George J Nichols | 54 | O | Farmer | Indiana |
| 40 | Katie J Nichols | 47 | Wife | — | Indiana |
| 41 | Ray V Nichols | 27 | Son | Traveling Salesman | Indiana |
| 42 | Lawrence H Nichols | 26 | Son | Farm Laborer | Indiana |
| 43 | Edward J Nichols | 24 | Son | Book Keeper | North Dakota |
| 44 | Frederick W Nichols | 22 | Son | Truck Driver | North Dakota |
| 45 | Mary E Nichols THIS PERSON | 20 | Daughter | — | North Dakota |
| 46 | Eva E Nichols | 18 | Daughter | — | North Dakota |
| 47 | Irene Nichols | 13 | Daughter | — | Illinois |
| 48 | Louise Nichols | 11 | Daughter | — | Illinois |
| 49 | Paul Nichols | 9 | Son | — | Illinois |
| 50 | Lewis Nichols | 6 | Son | — | Illinois |
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)