JL
James Lyons — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marquette-County, Michigan
Our Model Tree links this James Lyons across the 1920, 1930 and 1940 US Censuses in Marquette-County, Michigan (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a son (b.~1912), then head of a 5-person household.
Age 28
b. ~1912
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marquette-County, Michigan |
| Surname | Lyons |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Marquette City |
| 1935 Residence (County) | Marquette |
| Additional Details | |
| Occupation | Fireman |
| Industry | Steam Ship |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Fireman |
| Township / Ward | Marquette City |
| Est. Birth Year | ~1912 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Susan Lyons | Head | — | 62 | ~1878 |
| Joseph Knight | Other | — | 69 | ~1871 |
| Mary Knight | Other | — | 65 | ~1875 |
| Harold Lyons | Son | — | 31 | ~1909 |
| James Lyons | Son | — | 28 | ~1912 |
Census Appearances
1920
Marquette, Michigan
Son, age 8
Marquette, Michigan · implied b. ~1912 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | James J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Marquette, Michigan
Son, age 18
Marquette, Michigan · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Marquette-County, Michigan
Son, age 28
Marquette-County, Michigan · implied b. ~1912 — 5 household members
| Surname | Lyons |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Marquette City |
| 1935 Residence (County) | Marquette |
| Occupation | Fireman |
| Industry | Steam Ship |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 James Lyons across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Lyons (~0.92 confidence) and father Thomas Lyons (~0.92 confidence) and mother Susan Lyons (~0.92 confidence) and mother Margaret Lyons (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Lyons
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Thomas Lyons
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Susan Lyons
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Margaret Lyons
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Lyons
Son · 1940 · age 28 · b. ~1912 · Michigan
★ You are viewing this record
Sibling
Harold Lyons
Sibling · 1940 · age 31
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
1940 US Federal Census — Marquette-County, Michigan
Open full size
1940 US Federal Census — Marquette-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01787-00013)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Susan Lyons | 62 | Head | — | Michigan |
| 2 | Harold Lyons | 31 | Son | Roofer | Michigan |
| 3 | James Lyons THIS PERSON | 28 | Son | Fireman | Michigan |
| 4 | Joseph Knight | 69 | Brother | Laborer | Michigan |
| 5 | Mary Knight | 65 | Sister | — | Michigan |
| 6 | George Chapekis | 48 | Head | Proprietor | Greece |
| 7 | Catherine Chapekis | 39 | Wife | — | Greece |
| 8 | Angeline Chapekis | 17 | Daughter | — | Wisconsin |
| 9 | Bessie Chapekis | 16 | Daughter | — | Wisconsin |
| 10 | Theodore Chapekis | 13 | Son | — | Michigan |
| 11 | Nicolas Chapekis | 9 | Son | — | Michigan |
| 12 | Peter Remortel | 59 | Head | Stationary Fireman | Belgium |
| 13 | Agnes Remortel | 62 | Wife | — | Michigan |
| 14 | Wilfred Fish | 52 | Head | — | Michigan |
| 15 | Edward Fish | 26 | Son | — | Michigan |
| 16 | Wilfred Fish | 24 | Son | Teacher | Michigan |
| 17 | Rita Fish | 7 | Daughter | — | Michigan |
| 18 | Lenore Burger | 48 | Housekeeper | Housekeeper | Michigan |
| 19 | Vanis Maki | 40 | Head | Book-Keeper | Finland |
| 20 | Ann Maki | 43 | Wife | — | Finland |
| 21 | Leslie Maki | 18 | Son | — | Michigan |
| 22 | Antonie Morin | 63 | Head | Pipefitter | Canada-French |
| 23 | Cordelia Morin | 59 | Wife | — | Canada-French |
| 24 | Clyde Morgan | 25 | Lodger | Cleaner | Michigan |
| 25 | Glen Morgan | 21 | Lodger | Beer Boy | Michigan |
| 26 | William Rocheleau | 30 | Lodger | Machine Hand | Massachusetts |
| 27 | Edwin F. Root | 39 | Lodger | — | Michigan |
| 28 | Claude Friske | 22 | Lodger | Barber | Michigan |
| 29 | Leo Richer | 40 | Head | Laborer | Michigan |
| 30 | Cecelia Richer | 26 | Wife | — | Michigan |
| 31 | Jacqueline Richer | 5 | Daughter | — | Michigan |
| 32 | Lois Jean Richer | 2 | Daughter | — | Michigan |
| 33 | Roberta Richer | 0 | Daughter | — | Michigan |
| 34 | Leonard Simcoe | 53 | Head | — | Wisconsin |
| 35 | Ann Simcoe | 51 | Wife | — | Michigan |
| 36 | Llewelyn Bonamis | 26 | Step-Son | Service Man | Michigan |
| 37 | Allen Bonamis | 24 | Step-Son | Book-Keeper | Michigan |
| 38 | Carol Bonamis | 21 | Step-Daughter | Stenographer | Michigan |
| 39 | Doris Racine | 38 | Head | Janitor | Michigan |
| 40 | Louise Racine | 40 | Wife | Operator | Michigan |
Pedigree Summary
James + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)