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Mary Lawson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Lawson across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Lawson |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Medford City |
| Est. Birth Year | ~1922 |
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 |
|---|---|---|---|---|
| Florence Lawson | Daughter | — | 11 | ~1929 |
| Alma Lawson | Daughter | — | 16 | ~1924 |
| Elizabeth Lawson | Daughter | — | 13 | ~1927 |
| Mary Lawson | Daughter | — | 18 | ~1922 |
| Edward Lawson | Head | — | 48 | ~1892 |
| William Lawson | Son | — | 15 | ~1925 |
| Edward Lawson | Son | — | 19 | ~1921 |
| Anna Lawson | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 8
Middlesex, Massachusetts · implied b. ~1922 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawson |
| Given Name | Marjorie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| 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 |
1940
Middlesex-County, Massachusetts
Daughter, age 18
Middlesex-County, Massachusetts · implied b. ~1922 — 8 household members
| Surname | Lawson |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Highest Grade | H-3 |
| 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 Lawson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lawson
Daughter · 1940 · age 18 · b. ~1922 · Massachusetts
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Sibling
William Lawson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Lawson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Lawson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Lawson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alma Lawson
Sibling · 1940 · age 16
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01612-00773)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph J. Tavarone | 26 | Head | Coal Burner | Massachusetts |
| 2 | Anna B. Tavarone | 26 | Wife | Clothes Presser | New Jersey |
| 3 | Lorraine Tavarone | 2 | Daughter | — | Massachusetts |
| 4 | Daniel Tavarone | 1 | Son | — | Massachusetts |
| 5 | Arthur B. Lassiter | 51 | Head | Maintenance Dept Foreman | Massachusetts |
| 6 | Florence P. Lassiter | 47 | Wife | Domestic | Massachusetts |
| 7 | Arthur B. Lassiter | 21 | Son | Bell Boy | Massachusetts |
| 8 | Lawrence Lassiter | 20 | Son | New Worker | Massachusetts |
| 9 | Nancy M. Lassiter | 14 | Daughter | — | Massachusetts |
| 10 | Charlotte L. Gurr | 47 | Head | Domestic | Canada-Eng |
| 11 | Edward B. Hutchinson | 46 | Head | Trucking Operator | Massachusetts |
| 12 | Flora M. Hutchinson | 47 | Wife | Domestic | Eire |
| 13 | Edward B. Hutchinson | 23 | Son | New Worker | Massachusetts |
| 14 | Gardiner Hutchinson | 21 | Son | New Worker | Massachusetts |
| 15 | Hilda M. Hutchinson | 17 | Daughter | — | Massachusetts |
| 16 | Walter T. Hutchinson | 16 | Son | — | Massachusetts |
| 17 | Virginia Hutchinson | 11 | Daughter | — | Massachusetts |
| 18 | Fleming M. Hutchinson | 51 | Head | Truck Driver | Massachusetts |
| 19 | Gertrude M. Hutchinson | 17 | Daughter | Beans Counter Clerk | Massachusetts |
| 20 | Charles M. Hutchinson | 16 | Son | — | Massachusetts |
| 21 | Herbert J. Hutchinson | 14 | Son | — | Massachusetts |
| 22 | Stella G. Hart | 48 | Housekeeper | Domestic | England |
| 23 | Frank De Marco | 43 | Head | Shipping Clerk | Massachusetts |
| 24 | Helen T. De Marco | 43 | Wife | Maker | Massachusetts |
| 25 | Michael F. De Marco | 13 | Son | — | Massachusetts |
| 26 | John J. De Marco | 11 | Son | — | Massachusetts |
| 27 | Edward P. Lawson | 48 | Head | Wood Factory Watchman | Massachusetts |
| 28 | Anna Lawson | 47 | Wife | Cutter | Massachusetts |
| 29 | Edward J. Lawson | 19 | Son | New Worker | Massachusetts |
| 30 | Mary R. Lawson THIS PERSON | 18 | Daughter | — | Massachusetts |
| 31 | Alma J. Lawson | 16 | Daughter | — | Massachusetts |
| 32 | William T. Lawson | 15 | Son | — | Massachusetts |
| 33 | Elizabeth A. Lawson | 13 | Daughter | — | Massachusetts |
| 34 | Florence M. Lawson | 11 | Daughter | — | Massachusetts |
| 35 | Rexford F. Hayes | 40 | Head | Draftsman | England |
| 36 | Ruth M. Hayes | 36 | Wife | Telephone Operator | Pennsylvania |
| 37 | Ruth M. Hayes | 14 | Daughter | — | Massachusetts |
| 38 | Rexford F. Hayes | 12 | Son | — | Massachusetts |
| 39 | Donald F. Hayes | 8 | Son | — | Massachusetts |
| 40 | Walter M. Hayes | 3 | Son | — | Massachusetts |
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)