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Mary Lyons — 1940 US Census Record
Model Tree available1940 United States Federal Census · Plymouth-County, Massachusetts
Our Model Tree links this Mary Lyons across the 1920, 1930 and 1940 US Censuses in Plymouth-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Daniel & Daniel — first a daughter (b.~1916), then head of a 8-person household.
Age 24
b. ~1916
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Plymouth-County, Massachusetts |
| Surname | Lyons |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Brockton City |
| 1935 Residence (County) | Plymouth |
| Additional Details | |
| Occupation | Table work |
| Industry | Shoe factory |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 260 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Table Work |
| Township / Ward | Brockton City |
| Est. Birth Year | ~1916 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Geraldine Lyons | Daughter | — | 20 | ~1920 |
| Mary Lyons | Daughter | — | 24 | ~1916 |
| Margaret Lyons | Daughter | — | 15 | ~1925 |
| Irene Lyons | Daughter | — | 22 | ~1918 |
| Daniel Lyons | Head | — | 55 | ~1885 |
| John Lyons | Son | — | 19 | ~1921 |
| James Lyons | Son | — | 18 | ~1922 |
| Mary Lyons | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Plymouth, Massachusetts
Daughter, age 4
Plymouth, Massachusetts · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | Mary H. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| 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
Plymouth, Massachusetts
Daughter, age 14
Plymouth, Massachusetts · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Plymouth-County, Massachusetts
Daughter, age 24
Plymouth-County, Massachusetts · implied b. ~1916 — 8 household members
| Surname | Lyons |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Brockton City |
| 1935 Residence (County) | Plymouth |
| Occupation | Table work |
| Industry | Shoe factory |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 260 |
| Highest Grade | Hs 2 |
| 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 Mary Lyons across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Daniel Lyons (~0.92 confidence) and father Daniel 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
Daniel Lyons
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Daniel Lyons
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Mary Lyons
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Mary Lyons
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Lyons
Daughter · 1940 · age 24 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
James Lyons
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Lyons
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lyons
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Lyons
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Lyons
Sibling · 1940 · age 15
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 — Plymouth-County, Massachusetts
Open full size
1940 US Federal Census — Plymouth-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01637-00062)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Miskin, Lucy M. Miskis | 25 | Daughter | Bench Work | Massachusetts |
| 2 | Anthony P. Trakinis | 70 | Head | Laborer | Lithuania |
| 3 | Skolostica A. Trakinis | 70 | Wife | — | Lithuania |
| 4 | James E. Savitski | 34 | Head | Chief Engineer | Rhode Island |
| 5 | Lucy J.H. Savitski | 38 | Wife | — | Massachusetts |
| 6 | Francis E. Olsen | 23 | Head | Carpenter | Massachusetts |
| 7 | Viola G. Olsen | 21 | Wife | — | Massachusetts |
| 8 | Harvey G. Olsen | 43 | Father | Carpenter | Massachusetts |
| 9 | Dorothy G. Olsen | 18 | Daughter | Housekeeper | Massachusetts |
| 10 | James A. Mccabe | 46 | Head | Handicraft | Massachusetts |
| 11 | Mary J. Mccabe | 49 | Wife | — | Massachusetts |
| 12 | Mary J. Mccabe | 12 | Daughter | — | Massachusetts |
| 13 | James A. (Jr.) Mccabe | 11 | Son | — | Massachusetts |
| 14 | Catherine E. Mccabe | 10 | Daughter | — | Massachusetts |
| 15 | William C. Mccabe | 9 | Son | — | Massachusetts |
| 16 | Allen J. Mccabe | 8 | Son | — | Massachusetts |
| 17 | Robert F. Mccabe | 6 | Son | — | Massachusetts |
| 18 | Everett W. Parmenter | 53 | Head | Picking Stitches | Massachusetts |
| 19 | Audrey L. Parmenter | 17 | Daughter | — | Massachusetts |
| 20 | Elizabeth J. Parmenter | 76 | Mother | — | Massachusetts |
| 21 | Fred A. Tirrell | 58 | Head | Cutter | Massachusetts |
| 22 | Annie D. Tirrell | 53 | Wife | — | Massachusetts |
| 23 | Robert E. Tirrell | 23 | Son | Finisher | Massachusetts |
| 24 | Fred A. (Jr.) Tirrell | 19 | Son | Washer | Massachusetts |
| 25 | Norman Tirrell | 14 | Son | — | Massachusetts |
| 26 | Richard W. Tirrell | 12 | Son | — | Massachusetts |
| 27 | Daniel F. Lyons | 55 | Head | Laborer | Massachusetts |
| 28 | Mary H. Lyons | 51 | Wife | — | Massachusetts |
| 29 | Mary A. Lyons THIS PERSON | 24 | Daughter | Table Work | Massachusetts |
| 30 | Irene F. Lyons | 22 | Daughter | All Round Helper | Massachusetts |
| 31 | Geraldine R. Lyons | 20 | Daughter | Housekeeper | Massachusetts |
| 32 | John D. Lyons | 19 | Son | — | Massachusetts |
| 33 | James E. Lyons | 18 | Son | — | Massachusetts |
| 34 | Margaret D. Lyons | 15 | Daughter | — | Massachusetts |
| 35 | Charles L. Agnew | 60 | Head | Laster | Greece |
| 36 | Leanda R. Agnew | 57 | Wife | — | Canada-French |
| 37 | Charles L. (Jr.) Agnew | 22 | Son | New Worker | Massachusetts |
| 38 | George M. Agnew | 19 | Son | All Round Helper | Massachusetts |
| 39 | Albert L. Agnew | 16 | Son | Bench Work | Massachusetts |
| 40 | James E. Gross | 29 | Head | Presser | Rhode Island |
Related Census Records
Pedigree Summary
Mary + 5 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)