JF
Joseph Fitzgerald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Joseph Fitzgerald across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Fitzgerald |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| Est. Birth Year | ~1925 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Frances Fitzgerald | Daughter | — | 9 | ~1931 |
| Edward Fitzgerald | Son | — | 18 | ~1922 |
| Joseph Fitzgerald | Son | — | 15 | ~1925 |
| Eleanor Fitzgerald | Daughter | — | 7 | ~1933 |
| Mary Fitzgerald | Daughter | — | 19 | ~1921 |
| Louise Fitzgerald | Daughter | — | 10 | ~1930 |
| Mary Fitzgerald | Spouse | — | 47 | ~1893 |
| Teresa Fitzgerald | Daughter | — | 16 | ~1924 |
| William Fitzgerald | Son | — | 4 | ~1936 |
| Edward Fitzgerald | Head | — | 52 | ~1888 |
| Gerard Fitzgerald | Son | — | 14 | ~1926 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 5
Suffolk, Massachusetts · implied b. ~1925 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 15
Suffolk-County, Massachusetts · implied b. ~1925 — 11 household members
| Surname | Fitzgerald |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | Hs 1 |
| 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 Joseph Fitzgerald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Fitzgerald
Son · 1940 · age 15 · b. ~1925 · Massachusetts
★ You are viewing this record
Sibling
Gerard Fitzgerald
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Fitzgerald
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Fitzgerald
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Fitzgerald
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Fitzgerald
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Fitzgerald
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Fitzgerald
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Fitzgerald
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01664-00502)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry Breen | 10 | Son | — | Massachusetts |
| 2 | John Breen | 4 | Son | — | Massachusetts |
| 3 | Arthur Breen | 42 | Brother | Shoe Worker | Massachusetts |
| 4 | Martin Fritty|Tritty | 61 | Head | Blacksmith | Eire |
| 5 | Catherine Fritty|Tritty | 50 | Wife | — | Eire |
| 6 | Mary Fritty|Tritty | 26 | Daughter | Clerical | Massachusetts |
| 7 | Thomas Fritty|Tritty | 17 | Son | Errand Boy | Massachusetts |
| 8 | Catherine Fritty|Tritty | 16 | Daughter | — | Massachusetts |
| 9 | Anna Fritty|Tritty | 14 | Daughter | — | Massachusetts |
| 10 | Elizabeth Fritty|Tritty | 12 | Daughter | — | Massachusetts |
| 11 | Margaret Fritty|Tritty | 10 | Daughter | — | Massachusetts |
| 12 | James Fritty|Tritty | 8 | Son | — | Massachusetts |
| 13 | John Phalen | 60 | Head | Foreman | Massachusetts |
| 14 | Gertrude Phalen | 61 | Wife | — | Massachusetts |
| 15 | Irene E. Phalen | 33 | Daughter | Stenographer | Massachusetts |
| 16 | Mary Mcauliffe | 59 | Lodger | Shoe Worker | Massachusetts |
| 17 | Catherine Riley | 76 | Head | — | England |
| 18 | Alice Riley | 50 | Daughter | Saleslady | Massachusetts |
| 19 | Thomas J. Riley | 45 | Son | Fireman | Massachusetts |
| 21 | Bridget Manley | 60 | Head | — | Eire |
| 22 | Rosanna Manley | 21 | Daughter | Supervisor | Massachusetts |
| 23 | John Mooney | 49 | Head | Tailor | Massachusetts |
| 24 | Margaret Mooney | 48 | Wife | — | Massachusetts |
| 25 | James Mooney | 17 | Son | — | Massachusetts |
| 26 | Margaret Mooney | 15 | Daughter | — | Massachusetts |
| 27 | John Mooney | 14 | Son | — | Massachusetts |
| 28 | Mary Mooney | 12 | Daughter | — | Massachusetts |
| 29 | Helen Mooney | 10 | Daughter | — | Massachusetts |
| 30 | Edward Fitzgerald | 52 | Head | Clerk | Massachusetts |
| 31 | Mary K. Fitzgerald | 47 | Wife | — | Massachusetts |
| 32 | Mary E. Fitzgerald | 19 | Daughter | — | Massachusetts |
| 33 | Edward F. Fitzgerald | 18 | Son | — | Massachusetts |
| 34 | Teresa Fitzgerald | 16 | Daughter | — | Massachusetts |
| 35 | Joseph Fitzgerald THIS PERSON | 15 | Son | — | Massachusetts |
| 36 | Gerard Fitzgerald | 14 | Son | — | Massachusetts |
| 37 | Louise Fitzgerald | 10 | Daughter | — | Massachusetts |
| 38 | Frances Fitzgerald | 9 | Daughter | — | Massachusetts |
| 39 | Eleanor Fitzgerald | 7 | Daughter | — | Massachusetts |
| 40 | William Fitzgerald | 4 | Son | — | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)