JL
John Leach — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Cook, Illinois
Our Model Tree links this John Leach across the 1900 and 1910 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1897), then head of a 8-person household.
Age 13
b. ~1897
Male
Son
Born: Illinois
Single
1910 Census Record Details
| Census Year | 1910 |
| Location | Cook, Illinois |
| Surname | Leach |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1897 |
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.
8 people recorded at the same address in the 1910 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Leach | Son | — | 13 | ~1897 |
| Marie Leach | Daughter | — | 19 | ~1891 |
| Matthew Leach | Head | — | 43 | ~1867 |
| Catherine Leach | Spouse | — | 44 | ~1866 |
| Lillian Leach | Daughter | — | ~1910 | |
| Virginia Leach | Daughter | — | 10 | ~1900 |
| Loretta Leach | Daughter | — | 16 | ~1894 |
| Daniel Leach | Son | — | 5 | ~1905 |
Census Appearances
1900
Cook, Illinois
Son, age 4
Cook, Illinois · implied b. ~1896 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Birth Month | Sept |
| Birth Year | 1896 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
Cook, Illinois
Son, age 13
Cook, Illinois · implied b. ~1897 — 8 household members
| Surname | Leach |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| 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 John Leach across 2 US Census years (1900 and 1910) in Cook, Illinois, using XGBoost record linkage.
Show:
This person
Anchor record
John Leach
Son · 1910 · age 13 · b. ~1897 · Illinois
★ You are viewing this record
Sibling
Marie Leach
Sibling · 1910 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Leach
Sibling · 1910 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Leach
Sibling · 1910 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Leach
Sibling · 1910 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Leach
Sibling · 1910 · age
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
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:1910:13thcensus1910po276unit:0211)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nellie Lehoe | 25 | daughter | None | Illinois |
| 2 | John Lehoe | 23 | son | Car Starter | Illinois |
| 3 | James Beirne | 34 | Head | Patrolman | Ire English |
| 4 | Mary Beirne | 32 | Wife | None | Ire English |
| 5 | John Callaghan | 30 | brother-in-law | Bartender | Ire English |
| 6 | Dugald Moulton | 27 | Head | Electrician | Illinois |
| 7 | Frances K. Moulton | 26 | Wife | None | Bohemia |
| 8 | Dugald F. Moulton | 0 | son | None | Illinois |
| 9 | Robert Methven | 27 | Head | Carpenter | Scot Scotch |
| 10 | Anna Methven | 21 | Wife | None | Michigan |
| 11 | Edward E. Kughn | 33 | Head | Broker | Illinois |
| 12 | Frances B. Kughn | 28 | Wife | None | Ger |
| 13 | Edward E. Kughn | 6 | son | None | Illinois |
| 14 | Fielder H. Kughn | 3 | son | None | Illinois |
| 15 | Edward Breen | 44 | Head | Salesman | Illinois |
| 16 | Ellen Breen | 42 | Wife | None | Illinois |
| 17 | Martin Breen | 23 | son | Collector | Illinois |
| 18 | Joseph Breen | 20 | son | Teamster | Illinois |
| 19 | Robert Breen | 16 | son | Bell Boy | Illinois |
| 20 | Lawrence Breen | 12 | son | None | Illinois |
| 21 | William Boyle | 37 | Head | Switchman | Illinois |
| 22 | Christine Boyle | 30 | Wife | None | Illinois |
| 23 | John A. Sevarthing | 40 | Head | Driver | Swed Swedish |
| 24 | Elis Sevarthing | 32 | Wife | None | Swed Swedish |
| 25 | Gilbert G. Sevarthing | 8 | son | None | Illinois |
| 26 | Walter M. Sevarthing | 6 | son | None | Illinois |
| 27 | Erik Brandt | 21 | Roomer | Laborer | Swed Swedish |
| 28 | Albert Berg | 19 | Roomer | Laborer | Swed Swedish |
| 29 | Peter Loeds | 67 | Head | Laborer | Lux Luxembourg |
| 30 | Christina Loeds | 63 | Wife | None | New York |
| 31 | Joseph J. Loeds | 29 | son | Salesman | Illinois |
| 32 | Herbert H. Loeds | 27 | son | Painter | Illinois |
| 33 | Theresa A. Nilles | 23 | daughter | None | Illinois |
| 34 | John L. Nilles | 30 | son-in-law | Laborer | Illinois |
| 35 | Theodore J. Nilles | 0 | grandson | None | Illinois |
| 36 | Matthew Leach | 43 | Head | Engineer | Illinois |
| 37 | Catherine Leach | 44 | Wife | None | Illinois |
| 38 | Marie A. Leach | 19 | daughter | None | Illinois |
| 39 | Loretta R. Leach | 16 | daughter | None | Illinois |
| 40 | John Leach THIS PERSON | 13 | son | None | Illinois |
| 41 | Virginia Leach | 10 | daughter | None | Illinois |
| 42 | Daniel Leach | 5 | son | None | Illinois |
| 43 | Lillian C. Leach | 0 | daughter | None | Illinois |
| 44 | Mary Gavin | 65 | Head | None | Ire English |
| 45 | Della Gavin | 26 | daughter | Tel. Operator | Illinois |
| 46 | Anna Gavin | 20 | daughter | Tel. Operator | Illinois |
| 47 | Joseph English | 36 | Boarder | Switchman | Ire English |
| 48 | Robert A. Haberichter | 67 | Head | Brakeman | Ger |
| 49 | Augusta F. Haberichter | 56 | Wife | None | Ger |
| 50 | Lohice A. Haberichter | 24 | daughter | Artificial Flower | Illinois |
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)