WK
William Koch — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Mclean, Illinois
Our Model Tree links this William Koch across the 1900 and 1910 US Censuses in Mclean, Illinois (XGBoost, ~Confirmed) — first a head (b.~1843), then head of a 6-person household.
Age 57
b. ~1843
Male
Head
Born: Illinois
Married
1900 Census Record Details
| Census Year | 1900 |
| Location | Mclean, Illinois |
| Surname | Koch |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| Birth Month | Apr |
| Birth Year | 1843 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Occupation | Farmer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Chenoa Township |
| Est. Birth Year | ~1843 |
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.
6 people recorded at the same address in the 1900 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Koch | Head | — | 57 | ~1843 |
| Grace Koch | Daughter | — | 25 | ~1875 |
| Louis Koch | Son | — | 23 | ~1877 |
| Lydia Koch | Spouse | — | 51 | ~1849 |
| Walter Koch | Son | — | 15 | ~1885 |
| May Koch | Daughter | — | 11 | ~1889 |
Census Appearances
1900
Mclean, Illinois
Head, age 57
Mclean, Illinois · implied b. ~1843 — 6 household members
| Surname | Koch |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| Birth Month | Apr |
| Birth Year | 1843 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
Mclean, Illinois
Head, age 67
Mclean, Illinois · implied b. ~1843 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kock |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 36 |
| Father's Birthplace | (Ger.) German |
| Mother's Birthplace | (Ger.) German |
| Occupation | Own Income |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| 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 William Koch across 2 US Census years (1900 and 1910) in Mclean, Illinois, using XGBoost record linkage.
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This person
Anchor record
William Koch
Head · 1900 · age 57 · b. ~1843 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1900 US Federal Census — Mclean, Illinois
Open full size
1900 US Federal Census — Mclean, Illinois
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu322unit:0448)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | W. J. Ballinger | 34 | Head | Farmer | Illinois |
| 2 | M. C. Ballinger | 31 | Wife | — | Illinois |
| 3 | Bernie Ballinger | 10 | Daughter | At School | Illinois |
| 4 | Grace Ballinger | 7 | Daughter | — | Illinois |
| 5 | Stella Ballinger | 4 | Daughter | — | Illinois |
| 6 | J. W. Ballinger | 1 | Son | — | Illinois |
| 7 | E. D. Walter | 20 | Servant | Farm Hand | Indiana |
| 8 | Phil Pick | 41 | Head | Farmer | Illinois |
| 9 | E. M. Pick | 33 | Wife | — | Illinois |
| 10 | H. F. Pick | 15 | Son | Laborer | Illinois |
| 11 | E. M. Pick | 6 | Daughter | — | Illinois |
| 12 | Anton Moser | 29 | Boarder | Farmer | Germany |
| 13 | Joseph Moser | 32 | Head | Farmer | Germany |
| 14 | Mary Moser | 30 | Wife | — | Illinois |
| 15 | Richard Moser | 6 | Son | — | Illinois |
| 16 | Carl Moser | 4 | Son | — | Illinois |
| 17 | Ursula Moser | 2 | Daughter | — | Illinois |
| 18 | L. H. Becker | 65 | Head | Farmer | Maine |
| 19 | Ann Becker | 61 | Wife | — | England |
| 20 | Mary Becker | 39 | Daughter | — | Illinois |
| 21 | Sarah Becker | 37 | Daughter | Farmer | Illinois |
| 22 | George Becker | 35 | Son | Carpenter | Illinois |
| 23 | Albert Becker | 30 | Son | Carpenter | Illinois |
| 24 | Jessie Becker | 28 | Son | Farm Laborer | Illinois |
| 25 | Nellie Becker | 26 | Daughter | — | Illinois |
| 26 | Fred Becker | 24 | Son | Druggist | Illinois |
| 27 | John Ellis | 47 | Head | Day Laborer | Illinois |
| 28 | Delia Ellis | 42 | Wife | — | Kentucky |
| 29 | Gail Ellis | 20 | Daughter | — | Illinois |
| 30 | Sarah Ellis | 19 | Daughter | — | Illinois |
| 31 | Homer Ellis | 16 | Daughter | At School | Illinois |
| 32 | Banks Ellis | 11 | Son | At School | Illinois |
| 33 | Rachel Ellis | 8 | Daughter | — | Illinois |
| 34 | John Ellis | 6 | Son | — | Illinois |
| 35 | Dot Ellis | 4 | Daughter | — | Illinois |
| 36 | Alvett Ellis | 2 | Daughter | — | Illinois |
| 37 | Ezekiel Chapman | 31 | Head | Farmer | Illinois |
| 38 | Mary M. Chapman | 26 | Wife | — | Illinois |
| 39 | Albert H. Chapman | 4 | Son | — | Illinois |
| 40 | Lewis E. Chapman | 2 | Son | — | Illinois |
| 41 | Mildred Chapman | 1 | Daughter | — | Illinois |
| 42 | William Koch THIS PERSON | 57 | Head | Farmer | Illinois |
| 43 | Lydia H. Koch | 51 | Wife | — | Illinois |
| 44 | Grace Koch | 25 | Daughter | — | Illinois |
| 45 | Louis Koch | 23 | Son | Book Keeper | Illinois |
| 46 | Walter Koch | 15 | Son | At School | Illinois |
| 47 | May Koch | 11 | Daughter | At School | Illinois |
| 48 | Margaret Mccune | 45 | Head | — | Penn |
| 49 | Jennie Mccune | 38 | Daughter | School Teacher | Illinois |
| 50 | Margaret Mccune | 30 | Daughter | School Teacher | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1900 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)