LJ
Lawrence Johnson — 1920 US Census Record
Model Tree available1920 United States Federal Census · Cook, Illinois
Our Model Tree links this Lawrence Johnson across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Andrew & Florence — first a son (b.~1903), then head of a 6-person household.
Age 17
b. ~1903
Male
Son
Born: Illinois
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | Johnson |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Occupation | office clerk |
| Industry | electrical co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Office Clerk |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1903 |
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 1920 census.
| Name | Relation to head | Relative to Lawrence | Age | Birth yr |
|---|---|---|---|---|
| Ethel Johnson | Daughter | — | 15 | ~1905 |
| Agnes Johnson | Daughter | — | 20 | ~1900 |
| Andrew Johnson | Head | — | 57 | ~1863 |
| Leonard Johnson | Son | — | 23 | ~1897 |
| Lawrence Johnson | Son | — | 17 | ~1903 |
| Arthur Johnson | Son | — | 26 | ~1894 |
Census Appearances
1910
Cook, Illinois
Son, age 6
Cook, Illinois · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Lawrence H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Norway |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 17
Cook, Illinois · implied b. ~1903 — 6 household members
| Surname | Johnson |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | office clerk |
| Industry | electrical co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 27
Cook, Illinois · implied b. ~1903 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Laurence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Purchasing Agent |
| Industry | Automobiles |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Veteran | No |
| 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 Lawrence Johnson across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father Andrew Johnson (~0.92 confidence) and mother Florence Johnson (~0.92 confidence) and father Lawrence Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Johnson
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Florence Johnson
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
Lawrence Johnson
b. ~1880
Source father
● Household
· direct · ~0.92
This person
Anchor record
Lawrence Johnson
Son · 1920 · age 17 · b. ~1903 · Illinois
★ You are viewing this record
Sibling
Agnes Johnson
Sibling · 1920 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Johnson
Sibling · 1920 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Johnson
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Johnson
Sibling · 1920 · age 23
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
1920 US Federal Census — Cook, Illinois
Open full size
1920 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu333unit:0384)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Leopold | 4 | Son | None | Illinois |
| 2 | Elaine Leopold | 2 | Daughter | None | Illinois |
| 3 | Jean Leopold | 1 | Son | None | Illinois |
| 4 | Charles Boblick | 60 | Head | Machinist | Germany |
| 5 | Alvina Boblick | 56 | Wife | None | Wurttemberg |
| 6 | Lillian Boblick | 34 | Daughter | Bookkeeper | Illinois |
| 7 | Harris Boblick | 30 | Son | Postal Clerk | Illinois |
| 8 | Dorothy Boblick | 4 | Daughter | None | Illinois |
| 9 | Lena A. Kuntz | 78 | Head | Dressmaker | Bavaria |
| 10 | Bernhard Mandel | 41 | Head | Helper | Alsace |
| 11 | Elizabeth Mandel | 43 | Wife | None | Alsace Lorraine |
| 12 | Bernhard Jr. Mandel | 13 | Son | None | Illinois |
| 13 | Albert Ampers | 47 | Head | Driver | Illinois |
| 14 | Carrie Ampers | 45 | Wife | None | Illinois |
| 15 | Albert Ampers | 20 | Son | Trucker | Illinois |
| 16 | Ruth Ampers | 13 | Daughter | None | Illinois |
| 17 | Gilbert Ampers | 7 | Son | None | Illinois |
| 18 | Roy Ampers | 4 | Son | None | Illinois |
| 19 | John Westfall | 48 | Lodger | Dyer | Illinois |
| 20 | Andrew Johnson | 57 | Head | None | Sweden |
| 21 | Arthur Johnson | 26 | Son | Assistant Cashier | Illinois |
| 22 | Leonard Johnson | 23 | Son | Bookkeeper | Illinois |
| 23 | Agnes Johnson | 20 | Daughter | Milliner | Illinois |
| 24 | Lawrence Johnson THIS PERSON | 17 | Son | Office Clerk | Illinois |
| 25 | Ethel Johnson | 15 | Daughter | None | Illinois |
| 26 | Patrick Mckinley | 29 | Head | Helper | Ireland |
| 27 | Mary Mckinley | 32 | Wife | None | Ireland |
| 28 | Donald Mckinley | 2 | Son | None | Illinois |
| 29 | Margaret P. Mckinley | 0 | Daughter | None | Illinois |
| 30 | Peter Grigonis | 39 | Head | Laborer | Lithuania |
| 31 | Anna Grigonis | 38 | Wife | None | Lithuania |
| 32 | Edward Grigonis | 56 | Brother-in-law | Carpenter | Lithuania |
| 33 | Adolph Westfall | 17 | Boarder | Telephone Operator | Illinois |
| 34 | Peter Essers | 31 | Head | Teamster | Illinois |
| 35 | Josephine Essers | 42 | Wife | None | Illinois |
| 36 | Arthur Van Neil | 22 | Step-son | Bill Clerk | Illinois |
| 37 | Irene Van Neil | 17 | Step-daughter | Helper | Illinois |
| 38 | Christian Kopp | 46 | Head | Bartender | Illinois |
| 39 | Adolph Wolfmayer | 33 | Head | Baker | Lower Austria |
| 40 | Mary Wolfmayer | 32 | Wife | None | Lower Austria |
| 41 | John Wolfmayer | 12 | Son | None | Illinois |
| 42 | Alex Leonardis | 25 | Head | Waiter | Italy |
| 43 | Blanche Leonardis | 32 | Wife | None | Italy |
| 44 | Paul Leonardis | 12 | Son | None | Illinois |
| 45 | Mary E. Leonardis | 5 | Daughter | None | Illinois |
| 46 | Mary E. Bappa | 57 | Head | None | Illinois |
| 47 | Patrick Bappa | 34 | Head | Cable Layer | Ireland |
| 48 | Annie Bappa | 36 | Wife | None | Siberia|Siberia |
| 49 | Robert Bappa | 8 | Son | None | Illinois |
| 50 | Mary Bappa | 6 | Daughter | None | Illinois |
Pedigree Summary
Lawrence + 4 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)