RF
Robert Fitzgerald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Robert Fitzgerald across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Frederick & Peter — first a son (b.~1914), then head of a 2-person household.
Age 26
b. ~1914
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Fitzgerald |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Watertown Town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Watertown Town |
| Est. Birth Year | ~1914 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Koundakjian | Spouse | — | 44 | ~1896 |
| Robert Fitzgerald | Son | — | 26 | ~1914 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 5
Middlesex, Massachusetts · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Robert J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 15
Middlesex, Massachusetts · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Robert A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| 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
Middlesex-County, Massachusetts
Son, age 26
Middlesex-County, Massachusetts · implied b. ~1914 — 2 household members
| Surname | Fitzgerald |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Watertown Town |
| 1935 Residence (County) | Middlesex |
| Highest Grade | H 4 |
| 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 Robert Fitzgerald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frederick Fitzgerald (~0.92 confidence) and father Peter Fitzgerald (~0.92 confidence) and mother Jane Fitzgerald (~0.92 confidence) and mother Mary Fitzgerald (~0.92 confidence) and mother Mary Koundakjian (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frederick Fitzgerald
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Peter Fitzgerald
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Jane Fitzgerald
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mary Fitzgerald
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Mary Koundakjian
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Fitzgerald
Son · 1940 · age 26 · b. ~1914 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01620-00031)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Fitzgerald THIS PERSON | 26 | Son | — | Massachusetts |
| 2 | Mary Koundakjian | 44 | Wife | — | Turkey |
| 3 | Albert Koundakjian | 54 | Head | Store Keeper | Turkey |
| 4 | Richard Koundakjian | 15 | Son | — | Massachusetts |
| 5 | Robert Koundakjian | 12 | Son | — | Massachusetts |
| 6 | George Hamparian | 43 | Head | Delicatessen | Turkey |
| 7 | Arshalous Hamparian | 31 | Wife | — | Turkey |
| 8 | Violet Hamparian | 14 | Daughter | — | Massachusetts |
| 9 | Cynthia Hamparian | 11 | Daughter | — | Massachusetts |
| 10 | George Jr Hamparian | 2 | Son | — | Massachusetts |
| 11 | John Antonucci | 39 | Head | Shipper | Massachusetts |
| 12 | Constance Antonucci | 33 | Wife | — | New Jersey |
| 13 | Roberta Antonucci | 0 | Daughter | — | Massachusetts |
| 14 | Frederick Herford | 42 | Head | Officer | Massachusetts |
| 15 | Bernice Herford | 44 | Wife | — | New York |
| 16 | Timothy J Mccarthy | 34 | Head | Cook | Colorado |
| 17 | Mary A Mccarthy | 23 | Wife | — | Ireland |
| 18 | Timothy J Jr Mccarthy | 2 | Son | — | Massachusetts |
| 19 | Eileen Mccarthy | 0 | Daughter | — | Massachusetts |
| 20 | John Mccarthy | 25 | Boarder | Bartender | Montana |
| 21 | Michael Muley | 34 | Head | Porter | Ireland |
| 22 | Barbara Muley | 32 | Wife | — | Ireland |
| 23 | Barbara Muley | 5 | Daughter | — | Massachusetts |
| 24 | Joan Muley | 3 | Daughter | — | Massachusetts |
| 25 | William Muley | 1 | Son | — | Massachusetts |
| 26 | Harry Flamburis | 54 | Head | Clerk | Greece |
| 27 | Mary Flamburis | 45 | Wife | — | Greece |
| 28 | George Flamburis | 19 | Son | — | Michigan |
| 29 | Anthony Flamburis | 16 | Son | — | Michigan |
| 30 | Charles Flamburis | 14 | Son | — | Michigan |
| 31 | Rita Flamburis | 23 | Daughter | Cashier | Massachusetts |
| 32 | Lucille Flamburis | 20 | Daughter | Switchboard | Massachusetts |
| 33 | William Macpherson | 45 | Head | Salesman | Nova Scotia |
| 34 | Gladys Macpherson | 33 | Wife | — | Newfoundland |
| 35 | William Macpherson | 7 | Son | — | Massachusetts |
| 36 | Edmond Duthouse | 49 | Head | Auto Mechanic | Canada |
| 37 | Etta Duthouse | 50 | Wife | — | Massachusetts |
| 38 | Robert Duthouse | 18 | Son | — | Massachusetts |
| 39 | Marion Duthouse | 17 | Daughter | Receptionist | Massachusetts |
| 40 | Yauvan Stephen | 48 | Head | Tailor | Turkey |
Pedigree Summary
Robert
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)