MH
Mary Harris — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Harris across the 1910, 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1878), then head of a 4-person household.
Age 62
b. ~1878
Female
Head
Born: Rhode Island
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Harris |
| Given Name | Mary D. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Newburyport City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Newburyport City |
| Est. Birth Year | ~1878 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thelma Harris | Daughter | — | 30 | ~1910 |
| Mary Harris | Head | — | 62 | ~1878 |
| Dennis Dwyer | Other | — | 55 | ~1885 |
| Donald Harris | Son | — | 18 | ~1922 |
Census Appearances
1910
Essex, Massachusetts
Spouse, age 32
Essex, Massachusetts · implied b. ~1878 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Years Married | 11 |
| Children Born | 4 |
| Children Living | 4 |
| Father's Birthplace | Ire English |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1920
Essex, Massachusetts
Spouse, age 42
Essex, Massachusetts · implied b. ~1878 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Essex, Massachusetts
Other, age 53
Essex, Massachusetts · implied b. ~1877 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mary E. |
| Relationship to Head | Head-H |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| Age at First Marriage | 20 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Radio Set | R |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Essex-County, Massachusetts
Head, age 62
Essex-County, Massachusetts · implied b. ~1878 — 4 household members
| Surname | Harris |
| Given Name | Mary D. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Newburyport City |
| 1935 Residence (County) | Essex |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Harris across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Harris
Head · 1940 · age 62 · b. ~1878 · 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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
35 people indexed on this census page (nara:1940:m-t0627-01587-00234)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emily F. Rogers | 70 | Wife | — | Massachusetts |
| 42 | Eleanor Rogers | 39 | Daughter | Secretary | Massachusetts |
| 43 | Mabel Shaffer | 47 | Daughter | Shoe Worker | Massachusetts |
| 44 | Robert J. Mcphinney | 66 | Head | Undertaker | Massachusetts |
| 45 | Carrie S. Mcphinney | 72 | Wife | — | Massachusetts |
| 46 | Martha J. Mcphinney | 74 | Sister | — | Massachusetts |
| 48 | Mary D. Harris THIS PERSON | 62 | Head | — | Rhode Island |
| 49 | Thelma Harris | 30 | Daughter | Nurse | Massachusetts |
| 50 | Donald L. Harris | 18 | Son | Newspaper Worker | Massachusetts |
| 51 | Dennis Dwyer | 55 | Brother | — | Rhode Island |
| 52 | James Dixon | 37 | Head | Laborer | Massachusetts |
| 53 | Elizabeth Dixon | 34 | Wife | — | Massachusetts |
| 54 | George Dixon | 2 | Son | — | Massachusetts |
| 55 | Leon P. Callahan | 45 | Head | Clerk | Massachusetts |
| 56 | Katherine Callahan | 44 | Wife | — | Massachusetts |
| 57 | Margaret M. Callahan | 17 | Daughter | — | Massachusetts |
| 58 | Thomas L. Callahan | 12 | Son | — | Massachusetts |
| 59 | Joseph P. Callahan | 5 | Son | — | Massachusetts |
| 60 | Silas S. Rogers | 64 | Head | Auto Mechanic | Massachusetts |
| 61 | William F. Casey | 70 | Head | — | Massachusetts |
| 62 | Hannah M. Casey | 72 | Wife | — | Eire |
| 63 | John Casey | 41 | Head | Clerk | Massachusetts |
| 64 | Ethel Casey | 41 | Wife | — | New Hampshire |
| 65 | John Jr. Casey | 17 | Son | — | Massachusetts |
| 66 | William Casey | 15 | Son | — | Massachusetts |
| 67 | Elizabeth Casey | 14 | Daughter | — | Massachusetts |
| 72 | Arthur H. Tibbetts | 60 | Head | Baggageman | Massachusetts |
| 73 | Lottie Tibbetts | 59 | Wife | — | Massachusetts |
| 74 | Forest H. Fearing | 65 | Head | — | Massachusetts |
| 75 | Gertrude S. Fearing | 67 | Wife | — | Massachusetts |
| 76 | Leland O. Fearing | 41 | Son | Truck Driver | Massachusetts |
| 77 | Mary A. O'Connell | 55 | Head | Organist | Massachusetts |
| 78 | Henry Keefe | 41 | Head | Rigger | Massachusetts |
| 79 | Cecelia Keefe | 35 | Wife | — | Maine |
| 80 | Mary Keefe | 15 | Daughter | — | 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)