JM
John Mcnamara — 1930 US Census Record
Model Tree available1930 United States Federal Census · Berkshire, Massachusetts
Our Model Tree links this John Mcnamara across the 1910, 1920 and 1930 US Censuses in Berkshire, Massachusetts (XGBoost, ~Confirmed), with identified parents James & Annie — first a head (b.~1894), then head of a 5-person household.
Age 36
b. ~1894
Male
Head
Born: Massachusetts
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Berkshire, Massachusetts |
| Surname | McNamara |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 23 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Patternmaker |
| Industry | Electrical Mfg |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Patternmaker |
| Township / Ward | Pittsfield City |
| Est. Birth Year | ~1894 |
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 Mcnamara | Head | — | 36 | ~1894 |
| Edward Armstrong | Other | — | 29 | ~1901 |
| Mary Mcnamara | Other | — | 37 | ~1893 |
| James Mcnamara | Son | — | ~1930 | |
| John Mcnamara | Son | — | 11 | ~1919 |
Census Appearances
1910
Berkshire, Massachusetts
Son, age 16
Berkshire, Massachusetts · implied b. ~1894 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | pattern maker |
| Industry | electric works |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Berkshire, Massachusetts
Son, age 26
Berkshire, Massachusetts · implied b. ~1894 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Pattern maker |
| Industry | Gen Electric Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Berkshire, Massachusetts
Head, age 36
Berkshire, Massachusetts · implied b. ~1894 — 5 household members
| Surname | McNamara |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 23 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Patternmaker |
| Industry | Electrical Mfg |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| 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 Mcnamara across 3 US Census years (1910, 1920 and 1930) in Berkshire, Massachusetts, using XGBoost record linkage. Identified parents: father James Mcnamara (~0.92 confidence) and mother Annie Mcnamara (~0.92 confidence) and father James Mcnamara (~0.92 confidence) and mother Annie Mcnamara (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mcnamara
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Annie Mcnamara
b. ~1864
Source mother
● Household
· direct · ~0.92
Father
James Mcnamara
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Annie Mcnamara
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mcnamara
Head · 1930 · age 36 · b. ~1894 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Berkshire, Massachusetts
Open full size
1930 US Federal Census — Berkshire, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel885:0027)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary G. Rowan | 58 | Head | Operator | Massachusetts |
| 2 | Roland E. Rowan | 23 | Son | Bookkeeper | Massachusetts |
| 3 | Mary G. Rowan | 66 | Daughter-in-law | — | Massachusetts |
| 4 | John J. Mcnamara THIS PERSON | 36 | Head | Patternmaker | Massachusetts |
| 5 | Mary L. Mcnamara | 37 | Wife-H | — | Massachusetts |
| 6 | John J. Jr. Mcnamara | 11 | Son | — | Massachusetts |
| 7 | James M. Mcnamara | 0 | Son | — | Massachusetts |
| 8 | Edward Armstrong | 29 | Lodger | Electric Welder | England |
| 9 | Carl E. Caggio | 44 | Head | Superintendent | Austria |
| 10 | Hazel H. Caggio | 39 | Wife-H | — | Massachusetts |
| 11 | Carolyn G. Caggio | 14 | Daughter | — | Massachusetts |
| 12 | Mary E. Caggio | 4 | Daughter | — | Massachusetts |
| 13 | Mary E. Holderness | 79 | Mother-in-law | — | Massachusetts |
| 14 | Isabelle M. Mapletoft | 58 | Head-H | — | England |
| 15 | Eleanor B. Mapletoft | 26 | Daughter | Operator | Massachusetts |
| 16 | Harry M. Collins | 32 | Head | Shipping Clerk | Massachusetts |
| 17 | Elizabeth A. Collins | 25 | Wife-H | — | Massachusetts |
| 18 | James Hood | 39 | Brother-in-law | Chauffeur | Scotland |
| 19 | Rebecca C. Hood | 39 | Sister-in-law | — | Massachusetts |
| 20 | Rebecca M. Hood | 16 | Niece | — | Massachusetts |
| 21 | William D. Dellert | 51 | Head | Proprietor | Massachusetts |
| 22 | Pearl L. Dellert | 50 | Wife-H | — | New York |
| 23 | William Jr. Dellert | 20 | Son | — | Massachusetts |
| 24 | Norman D. Dellert | 16 | Son | — | Massachusetts |
| 25 | Clarence A. Frederickson | 28 | Head | Engineer | Connecticut |
| 26 | Grace Frederickson | 34 | Wife-H | — | New York |
| 27 | Charles D. Studley | 72 | Head | Mailing Dept. | New York |
| 28 | Isabelle L. Studley | 68 | Wife-H | — | Mississippi |
| 29 | Kirke C. Studley | 24 | Son | Printer | New York |
| 30 | Jerome Manning | 80 | Head | Retired | Massachusetts |
| 31 | Catherine Manning | 39 | Daughter | Saleslady | Massachusetts |
| 32 | Eliza Cullen | 75 | Sister-in-law | Retired | Irish Free State |
| 33 | John L. Fitzgerald | 74 | Head | Retired | Massachusetts |
| 34 | Mary L. Fitzgerald | 71 | Wife-H | — | Massachusetts |
| 35 | William J. Fitzgerald | 40 | Son | Transformer Dept | Massachusetts |
| 36 | Edward L. Fitzgerald | 33 | Son | Salesman | Massachusetts |
| 37 | Mary E. St. James | 62 | Head-H | — | Massachusetts |
| 38 | Joseph L. St. James | 39 | Son | Proprietor | Massachusetts |
| 39 | Catherine A. St. James | 35 | Son | Principal | Massachusetts |
| 40 | Robert J. St. James | 33 | Son | — | Massachusetts |
| 41 | Edward L. St. James | 32 | Son | Baker | Massachusetts |
| 42 | Mildred L. St. James | 30 | Daughter | — | Massachusetts |
| 43 | Clement C. St. James | 26 | Son | Physical Director | Massachusetts |
| 44 | William B. St. James | 24 | Son | Teacher | Massachusetts |
| 45 | Ronald E. St. James | 21 | Son | Salesman | Massachusetts |
| 46 | Anna T. St. James | 19 | Daughter | Stenographer | Massachusetts |
| 47 | Gerald J. St. James | 17 | Son | — | Massachusetts |
| 48 | William H. Weaser | 55 | Head | Optometrist | New York |
| 49 | Mary A. Weaser | 45 | Sister-H | — | New York |
| 50 | Arthur S. Rockwell | 64 | Head | Purch. Agent | Connecticut |
Related Census Records
Pedigree Summary
John
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)