JF
John Fitzgerald — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Fitzgerald across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 3-person household.
Age 58
b. ~1872
Male
Head
Born: Massachusetts
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Fitzgerald |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 27 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Salesman |
| Industry | Commercial Traveler |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Salesman |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1872 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Fitzgerald | Daughter | — | 24 | ~1906 |
| John Fitzgerald | Head | — | 58 | ~1872 |
| Elizabeth Fitzgerald | Spouse | — | 58 | ~1872 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 46
Middlesex, Massachusetts · implied b. ~1874 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 58
Middlesex, Massachusetts · implied b. ~1872 — 3 household members
| Surname | Fitzgerald |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 27 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Salesman |
| Industry | Commercial Traveler |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Other, age 66
Middlesex-County, Massachusetts · implied b. ~1874 — 40 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | John J. |
| Relationship to Head | Inmate |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Tewksbury Town |
| 1935 Residence (County) | Middlesex |
| Industry | Inmate |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 Fitzgerald 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 Fitzgerald
Head · 1930 · age 58 · b. ~1872 · 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
49 people indexed on this census page (ia:1930:massachusettscensus00reel915:0823)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Myer Goldman | 25 | Son | Lawyer | Massachusetts |
| 2 | Benjamin Goldman | 24 | Son | Lawyer | Massachusetts |
| 3 | Morris Goldman | 16 | Son | — | Massachusetts |
| 4 | Ellen M. Brien | 47 | Head | Stenographer | Massachusetts |
| 5 | Mary Brien | 50 | Sister | Teacher | Massachusetts |
| 6 | Charles J. Cronin | 29 | Head | Salesman | Massachusetts |
| 7 | Edna C. Cronin | 26 | Wife | — | Massachusetts |
| 8 | Henry H. Mckenna | 57 | Head | Pressman | Massachusetts |
| 9 | Julia M. Mckenna | 57 | Wife | — | Canada English |
| 10 | Florence G. Mckenna | 34 | Daughter | Accountant | Massachusetts |
| 11 | Henry J. Mckenna | 24 | Son | Manager | Massachusetts |
| 12 | Francis P. Mckenna | 21 | Son | Feeder | Massachusetts |
| 13 | Mary C. Mckenna | 61 | Sister-in-law | Graduate Nurse | Massachusetts |
| 14 | Francis E. Winslow | 61 | Head | Manager | England |
| 15 | Mary E. Winslow | 61 | Wife | — | Massachusetts |
| 16 | Leo F. Winslow | 27 | Son | Pressman | Massachusetts |
| 17 | Ralph E. Winslow | 25 | Son | Architect | Massachusetts |
| 18 | Charles B. Sweeney | 57 | Head | Pressman | Massachusetts |
| 19 | Catherine J. Sweeney | 57 | Wife | — | Massachusetts |
| 20 | Julia Sweeney | 22 | Daughter | — | Massachusetts |
| 21 | Charles B. Jr. Sweeney | 15 | Son | Apprentice | Massachusetts |
| 22 | Eva M. Maybank | 77 | Head | — | Russia |
| 23 | Edith Maybank | 21 | Daughter | — | Massachusetts |
| 24 | Rose Maybank | 18 | Daughter | — | Massachusetts |
| 25 | Margaret T. O'Keefe | 43 | Head | Teacher | Massachusetts |
| 26 | Catharine O'Keefe | 37 | Sister | Stenographer | Massachusetts |
| 28 | Alma M. Kane | 51 | Head | — | Irish Free State |
| 29 | Esther Kane | 20 | Daughter | Office Work | Massachusetts |
| 30 | Maurice Kane | 16 | Son | — | Massachusetts |
| 31 | Burton F. Thurston | 53 | Head | Night Watchman | Maine |
| 32 | Lillian Thurston | 53 | Wife | — | Massachusetts |
| 33 | Winfield Patterson | 26 | Step-son | — | Massachusetts |
| 34 | John J. Fitzgerald THIS PERSON | 58 | Head | Salesman | Massachusetts |
| 35 | Elizabeth F. Fitzgerald | 58 | Wife | — | Massachusetts |
| 36 | Gertrude R. Fitzgerald | 24 | Daughter | — | Massachusetts |
| 37 | Elizabeth Findlay | 78 | Head | — | Canada English |
| 38 | James Findlay | 33 | Son | Salesman | Massachusetts |
| 39 | Charles B. Findlay | 50 | Son | Carpenter | Canada English |
| 40 | Amerina Findlay | 30 | Daughter | Office Work | Massachusetts |
| 41 | Edward W. Gatins | 40 | Head | General Clerk | Canada English |
| 42 | Hallie B. Gatins | 41 | Wife | — | Canada English |
| 43 | Mary F. Gatins | 4 | Daughter | — | Canada English |
| 44 | Charles F. Hruger | 19 | Lodger | Bell Boy | Michigan |
| 45 | Gertrude Hruger | 19 | Lodger | — | Massachusetts |
| 46 | William Mcfadgen | 74 | Head | — | Canada English |
| 47 | Katherine Mcfadgen | 69 | Wife | — | Canada English |
| 48 | Frederick Mcfadgen | 19 | Son | — | Massachusetts |
| 49 | Walter Scott | 27 | Son-in-law | Salesman | Massachusetts |
| 50 | Mildred Scott | 29 | Daughter | — | 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)