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Mary Wallace — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Wallace across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 5-person household.
Age 52
b. ~1878
Female
Spouse
Born: Maine
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Wallace |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 24 |
| Father's Birthplace | Canada |
| Mother's Birthplace | England |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Township / Ward | Belmont Town |
| 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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Wallace | Daughter | — | 24 | ~1906 |
| William Wallace | Head | — | 59 | ~1871 |
| Charles Wallace | Son | — | 27 | ~1903 |
| Edward Wallace | Son | — | 28 | ~1902 |
| Mary Wallace | Spouse | — | 52 | ~1878 |
Census Appearances
1920
Middlesex, Massachusetts
Spouse, age 47
Middlesex, Massachusetts · implied b. ~1873 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wallace |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Maine |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| 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
Spouse, age 52
Middlesex, Massachusetts · implied b. ~1878 — 5 household members
| Surname | Wallace |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 24 |
| Father's Birthplace | Canada |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Middlesex-County, Massachusetts
Other, age 63
Middlesex-County, Massachusetts · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wallace |
| Given Name | Madge T. |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Single |
| Birthplace | Maine |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Penobscot |
| Occupation | Practical Nurse |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 780 |
| Highest Grade | C 2 |
| 1935 Residence | Maine |
| 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 Wallace across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Wallace
Spouse · 1930 · age 52 · b. ~1878 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel914:0851)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Harry Kurchan | 40 | Brother | — | Armenia |
| 52 | William H. Wallace | 59 | Head | Laborer | Massachusetts |
| 53 | Mary L. Wallace THIS PERSON | 52 | Wife | — | Maine |
| 54 | Edward J. Wallace | 28 | Son | Mover | Massachusetts |
| 55 | Charles Wallace | 27 | Son | Clerk | Massachusetts |
| 56 | Mary M. Wallace | 24 | Daughter | — | Massachusetts |
| 57 | James R. Miray | 49 | Head | Buyer | Massachusetts |
| 58 | Mary E. Miray | 49 | Wife | — | Canada |
| 59 | Ernest Westering | 44 | Head | Solicitor | Massachusetts |
| 60 | Beatrice S. Westering | 41 | Wife | — | Maine |
| 61 | James A. Lewis | 34 | Head | Salesman | Massachusetts |
| 62 | Marie S. Lewis | 31 | Wife | — | Massachusetts |
| 63 | Joan M. Lewis | 7 | Daughter | — | Massachusetts |
| 64 | Robert J. Lewis | 4 | Son | — | Massachusetts |
| 65 | William H. Howard | 51 | Head | Salesman | California |
| 66 | Charlotte Howard | 51 | Wife | — | Maine |
| 67 | William H. Jr. Howard | 12 | Son | — | California |
| 68 | Esther Slight | 18 | Servant | Maid | Connecticut |
| 69 | Thomas J. Flood | 48 | Head | Salesman | Massachusetts |
| 70 | Margaret J. Flood | 47 | Wife | — | Massachusetts |
| 71 | Mildred Flood | 9 | Daughter | — | Massachusetts |
| 72 | James W. Dorman | 65 | Head | — | New York |
| 73 | Isabelle Dorman | 40 | Daughter | Teacher | Massachusetts |
| 74 | Jane S. Dorman | 30 | Daughter | Clerk | Massachusetts |
| 75 | Milton G. Stanley | 48 | Head | Auditor | New York |
| 76 | Ethel Stanley | 46 | Wife | — | Illinois |
| 77 | John Marshall | 49 | Boarder | Engineer | Georgia |
| 78 | Jeremiah Duhig | 65 | Head | — | Irish Free State |
| 79 | Mary E. Duhig | 66 | Wife | — | Irish Free State |
| 80 | Mary E. Duhig | 33 | Daughter | Teacher | Massachusetts |
| 81 | Joseph Ecker | 45 | Head | Optometrist | Massachusetts |
| 82 | Bertha Ecker | 45 | Wife | — | Massachusetts |
| 83 | Joseph J. Ecker | 18 | Son | — | Massachusetts |
| 84 | Robert Ecker | 15 | Son | — | Massachusetts |
| 85 | Loretta M. Ecker | 13 | Daughter | — | Massachusetts |
| 86 | Anna M. Ecker | 11 | Daughter | — | Massachusetts |
| 87 | Harry B. King | 40 | Head | Secretary | New Hampshire |
| 88 | Sarah R. King | 35 | Wife | — | New Hampshire |
| 89 | Edward R. King | 11 | Son | — | New Hampshire |
| 90 | Frank R. Crow | 48 | Head | Clerk | Massachusetts |
| 91 | Alice A. Crow | 44 | Wife | — | New York |
| 92 | Frank R. Jr. Crow | 21 | Son | — | Massachusetts |
| 93 | Dorothy A. Crow | 14 | Daughter | — | Massachusetts |
| 94 | Martha Crow | 12 | Daughter | — | Massachusetts |
| 95 | Fred T. Curry | 49 | Head | Sales Manager | Massachusetts |
| 96 | Alice G. Curry | 49 | Wife | — | Massachusetts |
| 97 | Gertrude F. Curry | 21 | Daughter | Secretary | Massachusetts |
| 98 | Sherman H. Gunn | 34 | Head | Superintendent | Massachusetts |
| 99 | Florence R. Gunn | 37 | Wife | — | Connecticut |
| 100 | Sherman H. Jr. Gunn | 5 | Son | — | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)