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Mary Laughlin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Laughlin across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Laughlin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Suffolk |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Est. Birth Year | ~1925 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Richard Laughlin | Son | — | 19 | ~1921 |
| James Laughlin | Son | — | 3 | ~1937 |
| Mary Laughlin | Daughter | — | 15 | ~1925 |
| Catherine Laughlin | Daughter | — | 21 | ~1919 |
| Joseph Laughlin | Son | — | 13 | ~1927 |
| Francis Laughlin | Daughter | — | 10 | ~1930 |
| Thomas Laughlin | Son | — | 18 | ~1922 |
| Agnes Laughlin | Daughter | — | 16 | ~1924 |
| Mary Laughlin | Spouse | — | 44 | ~1896 |
| Helen Laughlin | Daughter | — | 12 | ~1928 |
| Thomas Laughlin | Head | — | 43 | ~1897 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 4
Suffolk, Massachusetts · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Laughlin |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 15
Suffolk-County, Massachusetts · implied b. ~1925 — 11 household members
| Surname | Laughlin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Suffolk |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Laughlin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Laughlin
Daughter · 1940 · age 15 · b. ~1925 · Massachusetts
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Sibling
Richard Laughlin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Laughlin
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Laughlin
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Laughlin
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Laughlin
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Laughlin
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Laughlin
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Laughlin
Sibling · 1940 · age 18
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
39 people indexed on this census page (nara:1940:m-t0627-01678-00541)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rochelle De Franza | 10 | Daughter | — | Massachusetts |
| 43 | William Martin | 44 | Head | Policeman | Massachusetts |
| 44 | Elizabeth Martin | 44 | Wife | — | Massachusetts |
| 45 | Irene Martin | 14 | Daughter | — | Massachusetts |
| 46 | William Martin | 10 | Son | — | Massachusetts |
| 47 | Geraldine Martin | 8 | Daughter | — | Massachusetts |
| 48 | Ruth Martin | 4 | Daughter | — | Massachusetts |
| 49 | Pasquale Mattaliano | 36 | Head | Truck Driver | Massachusetts |
| 50 | Harriett Mattaliano | 35 | Wife | — | Massachusetts |
| 51 | Barbara Mattaliano | 11 | Daughter | — | Massachusetts |
| 52 | Jeanette Mattaliano | 7 | Daughter | — | Massachusetts |
| 53 | Dominic Granieri | 53 | Head | Laborer | Italy |
| 54 | Maria Granieri | 42 | Wife | — | Italy |
| 55 | Grace Granieri | 19 | Daughter | — | Italy |
| 56 | Albert Granieri | 19 | Son | Paper Boy | Massachusetts |
| 57 | Thomas Laughlin | 43 | Head | Boiler Maker | Massachusetts |
| 58 | Mary E Laughlin | 44 | Wife | — | Ireland |
| 59 | Catherine Laughlin | 21 | Daughter | Clerk | Massachusetts |
| 60 | Richard Laughlin | 19 | Son | Shipper | Massachusetts |
| 61 | Thomas Laughlin | 18 | Son | — | Massachusetts |
| 62 | Agnes Laughlin | 16 | Daughter | — | Massachusetts |
| 63 | Mary Laughlin THIS PERSON | 15 | Daughter | — | Massachusetts |
| 64 | Joseph Laughlin | 13 | Son | — | Massachusetts |
| 65 | Helen Laughlin | 12 | Daughter | — | Massachusetts |
| 66 | Francis Patricia Laughlin | 10 | Daughter | — | Massachusetts |
| 67 | James Laughlin | 3 | Son | — | Massachusetts |
| 68 | John O'Laughlin | 35 | Head | Manager | Massachusetts |
| 69 | Winifred O'Laughlin | 30 | Wife | — | New York |
| 70 | Shawn O'Laughlin | 4 | Son | — | Massachusetts |
| 71 | Maureen O'Laughlin | 2 | Daughter | — | Massachusetts |
| 72 | Frank H Lawrence | 54 | Head | Machinist | Massachusetts |
| 73 | Grace Lawrence | 50 | Wife | — | Massachusetts |
| 74 | George Lawrence | 27 | Son | Book Keeper | Massachusetts |
| 75 | John Lawrence | 20 | Son | Helper | Massachusetts |
| 76 | Grace Lawrence | 17 | Daughter | — | Massachusetts |
| 77 | Vida Nolan | 53 | Head | Carpenter | Massachusetts |
| 78 | Doreen Nolan | 54 | Wife | — | Massachusetts |
| 79 | Alcid Nolan | 31 | Son | Carpenter | Massachusetts |
| 80 | Eugene Nolan | 28 | Son | Statistician | Massachusetts |
Related Census Records
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)