JL
James Lyons — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this James Lyons across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Patrick & Mary — first a son (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Lyons |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Cutter |
| Industry | Meat packer |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Cutter |
| Township / Ward | Boston City |
| Est. Birth Year | ~1919 |
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 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Anna Lyons | Daughter | — | 18 | ~1922 |
| Mary Lyons | Daughter | — | 12 | ~1928 |
| Patrick Lyons | Head | — | 47 | ~1893 |
| William Carney | Other | — | 43 | ~1897 |
| John Lyons | Son | — | 16 | ~1924 |
| Joseph Lyons | Son | — | 13 | ~1927 |
| James Lyons | Son | — | 21 | ~1919 |
| Mary Lyons | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 11
Suffolk, Massachusetts · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Age at First Marriage | 11 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 21
Suffolk-County, Massachusetts · implied b. ~1919 — 8 household members
| Surname | Lyons |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Cutter |
| Industry | Meat packer |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Patrick Lyons (~0.92 confidence) and mother Mary Lyons (~0.92 confidence) and mother Mary Lyons (~0.92 confidence) and mother Mary Lyons (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Lyons
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Mary Lyons
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Mary Lyons
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Mary Lyons
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Lyons
Son · 1940 · age 21 · b. ~1919 · Massachusetts
★ You are viewing this record
Sibling
Joseph Lyons
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Lyons
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lyons
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lyons
Sibling · 1940 · age 12
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01670-00096)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patrick J. Lyons | 47 | Head | Fireman | Massachusetts |
| 2 | Mary Lyons | 46 | Wife | — | Massachusetts |
| 3 | James Lyons THIS PERSON | 21 | Son | Cutter | Massachusetts |
| 4 | Anna Lyons | 18 | Daughter | — | Massachusetts |
| 5 | John Lyons | 16 | Son | — | Massachusetts |
| 6 | Joseph Lyons | 13 | Son | — | Massachusetts |
| 7 | Mary Lyons | 12 | Daughter | — | Massachusetts |
| 8 | William Carney | 43 | Brother-in-law | — | Massachusetts |
| 9 | George W. Harlow | 27 | Head | Foreman | Massachusetts |
| 10 | Alice Harlow | 24 | Wife | — | Massachusetts |
| 11 | Arthur Harlow | 0 | Son | — | Massachusetts |
| 12 | Etta Chamberlain | 46 | Head | — | Massachusetts |
| 13 | Bertha Walton | 65 | Mother | Press Operator | Canada English |
| 14 | Josephine Chamberlain | 20 | Daughter | Shaker | Massachusetts |
| 15 | Otto Norgren | 57 | Head | Cement Finisher | Sweden |
| 16 | Clara Norgren | 51 | Wife | — | Sweden |
| 17 | Audrey Norgren | 21 | Daughter | — | Massachusetts |
| 18 | Hyman May | 45 | Head | Building Wrecker | Massachusetts |
| 19 | Anna May | 37 | Wife | — | Massachusetts |
| 20 | Stella Martin | 37 | Sister | Clerk | Massachusetts |
| 21 | Marie Martin | 4 | Niece | — | Massachusetts |
| 22 | John Leonard | 64 | Head | Elevator Operator | Eire |
| 23 | Mary Leonard | 64 | Wife | — | Nova Scotia |
| 24 | Helen E. Leonard | 24 | Daughter | — | Massachusetts |
| 25 | Rita A. Leonard | 22 | Daughter | — | Massachusetts |
| 26 | Robert D. Leonard | 18 | Son | — | Massachusetts |
| 27 | Daniel Ferguson | 60 | Head | Foreman | Cape Breton |
| 28 | Christina Ferguson | 59 | Wife | — | Nova Scotia |
| 29 | Phoebe Ferguson | 26 | Daughter | Finisher | Nova Scotia |
| 30 | Bennington Ferguson | 25 | Son | Packer | Nova Scotia |
| 31 | Roderick Ferguson | 24 | Son | Washman | Nova Scotia |
| 32 | Daniel M. Ferguson | 22 | Son | Laborer | Nova Scotia |
| 33 | David Ferguson | 21 | Son | — | Nova Scotia |
| 34 | Muriel Ferguson | 18 | Daughter | — | Nova Scotia |
| 35 | David Gladstone | 8 | Grandson | — | Massachusetts |
| 36 | Clarence E. Witter | 48 | Head | Vocal Teacher | Massachusetts |
| 37 | Florentina E. Witter | 37 | Wife | — | Florida |
| 38 | Louise Dinsmore | 45 | Head | — | Massachusetts |
| 39 | John D. Cave | 60 | Uncle | — | Massachusetts |
| 40 | Elizabeth A. Lynch | 81 | Lodger | — | Boston |
Pedigree Summary
James + 4 siblings
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)