RH
Robert Hamilton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Robert Hamilton across the 1910, 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Andrew & Sarah — first a son (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Hamilton |
| Given Name | Robert J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Newburyport City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Newburyport City |
| Est. Birth Year | ~1905 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Andrew Hamilton | Head | — | 83 | ~1857 |
| Robert Hamilton | Son | — | 35 | ~1905 |
| Sarah Hamilton | Spouse | — | 73 | ~1867 |
Census Appearances
1910
Essex, Massachusetts
Other, age 5
Essex, Massachusetts · implied b. ~1905 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Robert |
| Relationship to Head | Boy |
| 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 |
1920
Essex, Massachusetts
Son, age 15
Essex, Massachusetts · implied b. ~1905 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Robert |
| 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 | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Son, age 25
Essex, Massachusetts · implied b. ~1905 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hamilton |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Finisher |
| Industry | Home Comb shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 35
Essex-County, Massachusetts · implied b. ~1905 — 3 household members
| Surname | Hamilton |
| Given Name | Robert J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Newburyport City |
| 1935 Residence (County) | Essex |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Hamilton across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Hamilton (~0.92 confidence) and mother Sarah Hamilton (~0.92 confidence) and mother Sarah Hamilton (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Hamilton
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Sarah Hamilton
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Sarah Hamilton
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Hamilton
Son · 1940 · age 35 · b. ~1905 · 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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01587-00054)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dana W Foley | 3 | Son | — | Massachusetts |
| 42 | Georgios Athanasopoulos | 59 | Head | Shoe Worker | Greece |
| 43 | Helen A Lewis | 39 | Maid | Maid | Massachusetts |
| 44 | Annie M Marsh | 75 | Head | — | Canada English |
| 45 | Andrew Hamilton | 83 | Head | — | Massachusetts |
| 46 | Sarah A Hamilton | 73 | Wife | — | Massachusetts |
| 47 | Robert J Hamilton THIS PERSON | 35 | Son | — | Massachusetts |
| 48 | Mary E Furnish | 55 | Head | Cook | Massachusetts |
| 49 | Arthur J Furnish | 34 | Son | Hat Worker | Massachusetts |
| 50 | Lucile P Furnish | 27 | Daughter | Fuse Maker | Massachusetts |
| 51 | Henry S Hotton | 41 | Head | Guard | India |
| 52 | Marion M Hotton | 43 | Wife | — | Massachusetts |
| 53 | Harriet E Hotton | 14 | Daughter | — | Massachusetts |
| 54 | Marilyn Hotton | 6 | Daughter | — | Massachusetts |
| 55 | Reynolds F Senior | 32 | Head | Laborer | Massachusetts |
| 56 | Bertha A Senior | 30 | Wife | — | Massachusetts |
| 57 | Rebecca J Senior | 8 | Daughter | — | Massachusetts |
| 58 | Frederick L Longton | 39 | Head | — | Michigan |
| 59 | Evelyn F Longton | 42 | Wife | Manager | Massachusetts |
| 60 | Robert V Longton | 10 | Son | — | Massachusetts |
| 61 | Frederick Longton | 8 | Son | — | Michigan |
| 62 | James E Frost | 74 | Boarder | — | Massachusetts |
| 63 | Mabel G Brown | 71 | Head | — | New Hampshire |
| 64 | George E Hillier | 53 | Head | Contractor | Massachusetts |
| 65 | Ardell P Hillier | 65 | Wife | — | Maine |
| 66 | Marguerite E Dow | 43 | Stepdaughter | Shoe Worker | Maine |
| 67 | Nicholas T Wright | 35 | Lodger | Scourer | Massachusetts |
| 68 | Fred W King | 34 | Lodger | Helper | Massachusetts |
| 69 | Charles William Marsh | 54 | Head | Carpenter | Massachusetts |
| 70 | Thomas M Wilkinson | 47 | Head | Timekeeper | Massachusetts |
| 71 | Walter H Packer | 32 | Head | Laborer | Massachusetts |
| 72 | Melvina D Packer | 25 | Wife | — | Massachusetts |
| 73 | Walter H Jr Packer | 9 | Son | — | Massachusetts |
| 74 | Dorothy D Packer | 7 | Daughter | — | Massachusetts |
| 75 | Leslie G Packer | 0 | Son | — | Massachusetts |
| 76 | Raymond M Quinn | 36 | Head | Laborer | Massachusetts |
| 77 | Grace E Quinn | 30 | Wife | — | Massachusetts |
| 78 | Raymond M Jr Quinn | 10 | Son | — | Massachusetts |
| 79 | Leo W Quinn | 6 | Son | — | Massachusetts |
| 80 | Louis J Quinn | 2 | Son | — | Massachusetts |
Pedigree Summary
Robert
Gen 1 · 3 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)