MJ
Mary Johnson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Johnson across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 6-person household.
Age 52
b. ~1878
Female
Spouse
Born: England
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Johnson |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1892 |
| Age at First Marriage | 23 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Waltham 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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edith Greenway | Daughter | — | 29 | ~1901 |
| Winnifred Johnson | Daughter | — | 24 | ~1906 |
| Arthur Johnson | Head | — | 58 | ~1872 |
| George Greenway | Other | — | 3 | ~1927 |
| George Greenway | Other | — | 35 | ~1895 |
| Mary Johnson | Spouse | — | 52 | ~1878 |
Census Appearances
1910
Middlesex, Massachusetts
Spouse, age 31
Middlesex, Massachusetts · implied b. ~1879 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | England |
| Years Married | 9 |
| Children Born | 3 |
| Children Living | 3 |
| Year of Immigration | 1892 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1920
Middlesex, Massachusetts
Spouse, age 42
Middlesex, Massachusetts · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1897 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | 1906 |
| Birthplace (normalized) | england |
1930
Middlesex, Massachusetts
Spouse, age 52
Middlesex, Massachusetts · implied b. ~1878 — 6 household members
| Surname | Johnson |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1892 |
| Age at First Marriage | 23 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Johnson across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
Mary Johnson
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:massachusettscensus00reel930:0693)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret L. Flood | 42 | Head | Office Mgr | Massachusetts |
| 2 | Mary E. Flood | 52 | Sister | Nurse | Canada-English |
| 3 | Howard E. Wheaton | 44 | Brother | Clerk-Making | Canada-English |
| 4 | Thomas F. Gugarty | 45 | Head | Night Watchman | Massachusetts |
| 5 | William Gugarty | 31 | Son | Laborer | Massachusetts |
| 6 | Helen R. Gugarty | 26 | Daughter | — | Massachusetts |
| 7 | Alice Gugarty | 18 | Daughter | Saleswoman | Massachusetts |
| 8 | Mary W. Gugarty | 60 | Mother | — | Massachusetts |
| 9 | Helen Ruane | 35 | Boarder | Photograph Finisher | Massachusetts |
| 10 | Thomas F. Jr. Gugarty | 22 | Son | Shipping Clerk | Massachusetts |
| 11 | Charles W. Vallely | 47 | Head | Machinist | Massachusetts |
| 12 | Agnes M. Vallely | 42 | Wife | — | England |
| 13 | Statia R. Vallely | 23 | Daughter | Stenographer | Massachusetts |
| 14 | Agnes M. Vallely | 18 | Daughter | Asst Forelady | Massachusetts |
| 15 | Joseph H. Studholme | 63 | Head | Watchmaker | New York |
| 16 | Emma B. Studholme | 60 | Wife | — | Massachusetts |
| 17 | Richard D. Studholme | 24 | Son | Mechanic | Massachusetts |
| 18 | Jane Studholme | 22 | Daughter-in-law | Saleswoman | Massachusetts |
| 19 | Alton L. Shatford | 33 | Head | Claim Adjuster | Canada-English |
| 20 | Esther D. Shatford | 33 | Wife | — | Massachusetts |
| 21 | Allen P. Shatford | 1 | Son | — | Massachusetts |
| 22 | Carrie Shatford | 83 | Mother | — | Canada-English |
| 23 | Bridget L. Shatford | 70 | Sister | — | Canada-English |
| 24 | George E. Regan | 54 | Head | Proprietor | Massachusetts |
| 25 | Estella S. Regan | 38 | Wife | — | Massachusetts |
| 26 | G. Thornton Regan | 5 | Son | — | Massachusetts |
| 27 | Harold J. Hearn | 36 | Head | Merchant | Massachusetts |
| 28 | Loretta Hearn | 33 | Wife | — | Massachusetts |
| 29 | Mathilda Hanson | 64 | Head | — | Sweden |
| 30 | Arthur Johnson | 58 | Head | Proprietor | England |
| 31 | Mary A. Johnson THIS PERSON | 52 | Wife | — | England |
| 32 | Winnifred M. Johnson | 24 | Daughter | Inspector | Massachusetts |
| 33 | George G. Greenway | 35 | Son-in-law | Watchmaker | Illinois |
| 34 | Edith E. Greenway | 29 | Daughter | — | Massachusetts |
| 35 | George G. Jr. Greenway | 3 | Gr-son | — | Massachusetts |
| 36 | Catherine M. Corcoran | 64 | Head | — | Irish Free State |
| 37 | Arthur M. Christianson | 32 | Son-in-law | Mechanic | Massachusetts |
| 38 | Loretta R. Christianson | 26 | Daughter | — | Massachusetts |
| 39 | Ruth M. Christianson | 2 | Grdaughter | — | Massachusetts |
| 40 | Alice R. Corcoran | 36 | Daughter | Dialer | Massachusetts |
| 41 | Elizabeth G. Corcoran | 34 | Daughter | Gainer | Massachusetts |
| 42 | Albert J. Sheffield | 39 | Head | Electrician | Massachusetts |
| 43 | Lillian E. Sheffield | 36 | Wife | — | Massachusetts |
| 44 | Marion F. Sheffield | 9 | Daughter | — | Massachusetts |
| 45 | Robert L. Sheffield | 4 | Son | — | Massachusetts |
| 46 | Elizabeth B. Thomas | 58 | Head | — | Massachusetts |
| 47 | Everett P. Thomas | 29 | Son | Office Mgr | Massachusetts |
| 48 | Roland B. Thomas | 22 | Son | Presser | Massachusetts |
| 49 | Marie S. Roach | 21 | Boarder | Book Binding | Canada-French |
| 50 | James S. Smith | 58 | Head | Attendant | Canada-English |
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)