JM
John Mack — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Mack across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 5-person household.
Age 40
b. ~1890
Male
Head
Born: Massachusetts
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Mack |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Salesman |
| Industry | Wool Wastes |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Salesman |
| Township / Ward | North Reading Town |
| Est. Birth Year | ~1890 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Mack | Head | — | 40 | ~1890 |
| Raymond Mack | Son | — | 15 | ~1915 |
| Marjorie Mack | Daughter | — | 9 | ~1921 |
| Minerva Mack | Spouse | — | 38 | ~1892 |
| John Mack | Son | — | 7 | ~1923 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 30
Middlesex, Massachusetts · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Commercial Trav |
| Industry | Woolen Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 40
Middlesex, Massachusetts · implied b. ~1890 — 5 household members
| Surname | Mack |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Salesman |
| Industry | Wool Wastes |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Other, age 48
Middlesex-County, Massachusetts · implied b. ~1892 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John W |
| Relationship to Head | Hired man |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Waterbury |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 888 |
| Highest Grade | No 8 |
| 1935 Residence | Vermont |
| 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 John Mack across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mack
Head · 1930 · age 40 · b. ~1890 · 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:massachusettscensus00reel927:0287)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Mason | 43 | Head | Proprietor | Michigan |
| 2 | Philomena Mason | 41 | Wife | — | Michigan |
| 3 | Marion Mason | 10 | Daughter | — | Michigan |
| 4 | Mildred Mason | 1 | Daughter | — | Massachusetts |
| 5 | Leo Macdonald | 22 | Boarder | Chauffeur | Canada-English |
| 6 | Chester Fogg | 47 | Head | Superintendent | Iowa |
| 7 | Katherine Mccarthy | 41 | Lodger | Proprietor | Massachusetts |
| 8 | James Murphy | 63 | Boarder | Machinist | New York |
| 9 | Sara Murphy | 52 | Boarder | — | New York |
| 10 | John Hay | 35 | Head | Proprietor | Massachusetts |
| 11 | Margaret Hay | 27 | Wife | — | England |
| 12 | Eileen Hay | 3 | Daughter | — | Massachusetts |
| 13 | John Jr. Hay | 1 | Son | — | Massachusetts |
| 14 | Leo Cavanaugh | 23 | Brother-in-law | Salesman | Massachusetts |
| 15 | Bloomfield Smith | 52 | Head | Salesman | Maine |
| 16 | Isabelle Smith | 19 | Daughter | Secretary | Massachusetts |
| 17 | Olive Smith | 16 | Daughter | — | Massachusetts |
| 18 | Ruth Smith | 13 | Daughter | — | Massachusetts |
| 19 | Edna Smith | 11 | Daughter | — | Massachusetts |
| 20 | John E. Mack | 68 | Head | — | Massachusetts |
| 21 | Margaret E. Mack | 68 | Wife | — | Massachusetts |
| 22 | Doris E. Mack | 18 | Daughter | Operator | Massachusetts |
| 23 | Arnold Wood | 35 | Head | Sander | Massachusetts |
| 24 | Annie Wood | 37 | Wife | — | England |
| 25 | Norma G. Wood | 11 | Daughter | — | Massachusetts |
| 26 | Richard Wood | 9 | Son | — | Massachusetts |
| 27 | Claire A. Wood | 4 | Daughter | — | Massachusetts |
| 28 | Clifton E. Hicks | 31 | Head | Special Agent | Massachusetts |
| 29 | Louise F. Hicks | 29 | Wife | — | Massachusetts |
| 30 | Lucia Hicks | 3 | Daughter | — | Massachusetts |
| 31 | Leslie E. Hicks | 0 | Son | — | Massachusetts |
| 32 | John A. Mack THIS PERSON | 40 | Head | Salesman | Massachusetts |
| 33 | Minerva Mack | 38 | Wife | — | Massachusetts |
| 34 | Raymond Mack | 15 | Son | — | Massachusetts |
| 35 | Marjorie E. Mack | 9 | Daughter | — | Massachusetts |
| 36 | John E. Mack | 7 | Son | — | Massachusetts |
| 37 | Ezra E. Clark | 52 | Head | Chauffeur | New York |
| 38 | Christine Clark | 52 | Wife | — | Massachusetts |
| 39 | Ernest W. Clark | 13 | Son | — | Massachusetts |
| 40 | Otelo Rossi | 35 | Head | Proprietor | Italy |
| 41 | Juanie Rossi | 40 | Wife | — | Italy |
| 42 | Gusoni Rossi | 41 | Brother | Laborer | Italy |
| 43 | Teresa Rossi | 34 | Wife | — | Italy |
| 44 | Manuel Sousa | 35 | Head | Mechanic | Portugal |
| 45 | Yvonne Sousa | 25 | Wife | — | Massachusetts |
| 46 | Victor Sousa | 14 | Son | — | Massachusetts |
| 47 | John P. Sousa | 13 | Son | — | Massachusetts |
| 48 | Buddy Flaherty | 23 | Boarder | — | No Custody Information |
| 49 | Phitcello Zacaka | 51 | Boarder | Laborer | Italy |
| 50 | Mary G. Bianco | 48 | Head | Proprietor | Italy |
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)