MW
Mary Walsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Walsh across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1858), then head of a 5-person household.
Age 82
b. ~1858
Female
Head
Born: Maine
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Walsh |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 82 |
| Marital Status | Widowed |
| Birthplace | Maine |
| 1935 Residence (City) | Newton |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Mass |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Township / Ward | Newton |
| Est. Birth Year | ~1858 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Walsh | Head | — | 82 | ~1858 |
| Frances Grogan | Other | — | 52 | ~1888 |
| Amy Colwell | Other | — | 38 | ~1902 |
| Mary Walsh | Other | — | 50 | ~1890 |
| Louis Walsh | Son | — | 48 | ~1892 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 58
Middlesex, Massachusetts · implied b. ~1862 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | Mary J. |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Maine |
| Father's Birthplace | Gibraltar |
| Mother's Birthplace | Ireland |
| Occupation | Stitcher |
| Industry | Apron Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Middlesex, Massachusetts
Other, age 72
Middlesex, Massachusetts · implied b. ~1858 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | Mary E |
| Relationship to Head | Head-H |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Maine |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Veteran | 50 |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Middlesex-County, Massachusetts
Head, age 82
Middlesex-County, Massachusetts · implied b. ~1858 — 5 household members
| Surname | Walsh |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 82 |
| Marital Status | Widowed |
| Birthplace | Maine |
| 1935 Residence (City) | Newton |
| 1935 Residence (County) | Middlesex |
| Highest Grade | H-4 |
| 1935 Residence | Mass |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 Walsh across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Walsh
Head · 1940 · age 82 · b. ~1858 · Massachusetts
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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
34 people indexed on this census page (nara:1940:m-t0627-01616-00203)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles L. Lander | 58 | Head | Salesman | Mass |
| 42 | Agnes Lander | 57 | Wife | Salesman | Mass |
| 43 | Lander | None | — | — | — |
| 44 | Harry Stern | 38 | Head | Salesman | Mass |
| 45 | Sally Stern | 36 | Wife | Salesman | Mass |
| 46 | William Stern | 7 | Son | — | Mass |
| 47 | Judith Stern | 4 | Dau | — | Mass |
| 48 | Ethel Stern | 34 | Sis | Nurse | Mass |
| 49 | Harold S. Breedon | 49 | Head | Manager | Maine |
| 50 | Blanche Breedon | 49 | Wife | Manager | Maine |
| 51 | Frank Haigs | 82 | Father in law | — | England |
| 52 | M. Joseph Lane | 54 | Head | Executive | Mass |
| 53 | Regina Lane | 46 | Wife | — | Alabama |
| 54 | Charles Sunto | 25 | Head | — | — |
| 57 | Paul Goldstein | 32 | Head | Lawyer | Mass |
| 58 | Laura Goldstein | 30 | Wife | — | Mass |
| 59 | Lee Goldstein | 2 | Son | — | Mass |
| 60 | Juliet Cody | 18 | Servant | Maid | New Hampshire |
| 61 | Mary Walsh THIS PERSON | 82 | Head | — | Maine |
| 62 | Louis Walsh | 48 | Son | Investigator | Maine |
| 63 | Mary Walsh | 50 | Dau | Book Seller | Maine |
| 64 | Frances Grogan | 52 | Servant | Maid | Mass |
| 65 | Amy Colwell | 38 | Nurse | Nurse R.N. | Rhode Island |
| 66 | John Keane | 45 | Head | Doctor Md | Mass |
| 67 | Edith Keane | 42 | Wife | Doctor Md | Penn. |
| 68 | John Keane | 18 | Son | — | Mass |
| 69 | Marie Keane | 11 | Dau | — | Mass |
| 70 | John Mallery | 60 | Head | Lawyer | Mass |
| 71 | Marian Mallery | 55 | Wife | — | Mass |
| 72 | John Jr. Mallery | 28 | Son | Lawyer | Mass |
| 73 | Jean Mallery | 25 | Dau | — | Mass |
| 74 | William Mallery | 16 | Son | — | Mass |
| 75 | Merron Mallery | 14 | Dau | — | Mass |
| 76 | Winifred Greenaway | 26 | Servant | Maid | Eire |
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)