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Mary Lord — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Lord across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Lord |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Newton City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Fred Lord | Head | — | 50 | ~1890 |
| Mary Lord | Daughter | — | 15 | ~1925 |
| Kenneth Lord | Son | — | 19 | ~1921 |
| Shirley Lord | Daughter | — | 17 | ~1923 |
| Ethelyn Lord | Spouse | — | 47 | ~1893 |
| Marjorie Lord | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 4
Suffolk, Massachusetts · implied b. ~1926 — 43 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Loud |
| 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 |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 15
Middlesex-County, Massachusetts · implied b. ~1925 — 6 household members
| Surname | Lord |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| Highest Grade | Hs 1 |
| 1935 Residence | Massachusetts |
| 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 Lord across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lord
Daughter · 1940 · age 15 · b. ~1925 · Massachusetts
★ You are viewing this record
Sibling
Marjorie Lord
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Lord
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Lord
Sibling · 1940 · age 17
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
33 people indexed on this census page (nara:1940:m-t0627-01616-00260)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Phillip E. Wait | 43 | Head | Cost Engineer | Massachusetts |
| 2 | Estella W. Wait | 40 | Wife | Cost Engineer | Massachusetts |
| 3 | Mary Ellen Wait | 8 | Daughter | — | Massachusetts |
| 4 | Frank B. Tassanary | 51 | Head | Clerical | Pennsylvania |
| 5 | Olive E. Tassanary | 46 | Wife | — | Massachusetts |
| 6 | Fred G. Lord | 50 | Head | Installer | Massachusetts |
| 7 | Ethelyn M. Lord | 47 | Wife | — | Massachusetts |
| 8 | Marjorie E. Lord | 21 | Daughter | Stenographer | Massachusetts |
| 9 | Kenneth J. Lord | 19 | Son | Pressman | Massachusetts |
| 10 | Shirley Lord | 17 | Daughter | — | Massachusetts |
| 11 | Mary Lord THIS PERSON | 15 | Daughter | — | Massachusetts |
| 16 | Robert B. Smith | 47 | Head | Carpenter | Massachusetts |
| 17 | Roma Smith | 38 | Wife | Bookkeeper | Maine |
| 18 | Edwin F. Smith | 62 | Brother | Gardener | Massachusetts |
| 19 | Elizabeth Carlson | 77 | Mother-in-law | — | Maine |
| 20 | Mabelle Carlson | 56 | Sister-in-law | Elementary Teacher | Maine |
| 21 | Edmond Dassevant | 58 | Head | Engineer | Belgium |
| 22 | Elsie Dassevant | 56 | Wife | — | Massachusetts |
| 23 | Edmond Jr. Dassevant | 27 | Son | — | Massachusetts |
| 24 | Paul F. Dassevant | 22 | Son | Clerical | Massachusetts |
| 25 | Howard Vail | 81 | Father-in-law | — | Delaware |
| 26 | George C. Glynn | 63 | Head | Proprietor | Massachusetts |
| 27 | Ethel T. Glynn | 64 | Wife | — | Massachusetts |
| 30 | Charles D. Coakley | 36 | Head | Cashier | Massachusetts |
| 31 | Alice B. Coakley | 33 | Wife | — | Mexico |
| 32 | Charlene Coakley | 6 | Daughter | — | Massachusetts |
| 33 | Paul Coakley | 2 | Son | — | Massachusetts |
| 34 | Henrietta Fowler | 64 | Mother-in-law | — | Mexico |
| 35 | John O. Connolly | 54 | Head | Salesman & Rep | Massachusetts |
| 36 | Mary A. Connolly | 52 | Sister | Stenographic | Massachusetts |
| 37 | Catherine F. Darcy | 90 | Aunt | — | Massachusetts |
| 38 | George Thulborn | 72 | Head | — | England |
| 39 | Elizabeth Roache | 18 | Cousin | — | 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)